NEET- 2024-S6 — NEET 2024 Question Paper with Solutions

Q1 PHYSICS Unit 18: Atoms and Nuclei

Match List I with List II. List I (Spectral Lines of Hydrogen for transitions from) A. $n_2 = 3$ to $n_1 = 2$ B. $n_2 = 4$ to $n_1 = 2$ C. $n_2 = 5$ to $n_1 = 2$ D. $n_2 = 6$ to $n_1 = 2$ List II (Wavelengths (nm)) I. 410.2 II. 434.1 III. 656.3 IV. 486.1 Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. (1) A-I, B-II, C-III, D-IV
B. (2) A-II, B-I, C-IV, D-III
C. (3) A-III, B-IV, C-II, D-I
D. (4) A-IV, B-III, C-I, D-II

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Q2 PHYSICS Unit 13: Magnetic Effects of Current and Magnetism

Match List-I with List-II. List-I (Material) A. Diamagnetic B. Ferromagnetic C. Paramagnetic D. Non-magnetic List-II (Susceptibility ($\chi$)) I. $\chi = 0$ II. $0 > \chi \ge -1$ III. $\chi \gg 1$ IV. $0 < \chi < \epsilon$ (a small positive number) Choose the correct answer from the options given below:

A. (1) A-IV, B-III, C-II, D-I
B. (2) A-II, B-III, C-IV, D-I
C. (3) A-II, B-I, C-III, D-IV
D. (4) A-III, B-II, C-I, D-IV

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Q3 PHYSICS Unit 13: Magnetic Effects of Current and Magnetism

In a uniform magnetic field of 0.049 T, a magnetic needle performs 20 complete oscillations in 5 seconds as shown. The moment of inertia of the needle is $9.8 \times 10^{-6}\text{ kg m}^2$. If the magnitude of magnetic moment of the needle is $x \times 10^{-5}\text{ Am}^2$; then the value of 'x' is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. (1) $1280\pi^2$
B. (2) $5\pi^2$
C. (3) $128\pi^2$
D. (4) $50\pi^2$

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Q4 PHYSICS Unit 16: Optics

An unpolarised light beam strikes a glass surface at Brewster's angle. Then

↻ Repeated question — also appeared in 2024 (4 sets)

A. the reflected light will be completely polarised but the refracted light will be partially polarised.
B. the reflected light will be partially polarised.
C. the refracted light will be completely polarised.
D. both the reflected and refracted light will be completely polarised.

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Q5 PHYSICS Unit 19: Electronic Devices

Consider the following statements A and B and identify the correct answer: A. For a solar-cell, the I-V characteristics lies in the IV quadrant of the given graph. B. In a reverse biased pn junction diode, the current measured in ($\mu A$), is due to majority charge carriers.

↻ Repeated question — also appeared in 2024 (4 sets)

A. Both A and B are incorrect.
B. A is correct but B is incorrect.
C. A is incorrect but B is correct.
D. Both A and B are correct.

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Q6 PHYSICS Unit 16: Optics

A light ray enters through a right-angled prism at point P with the angle of incidence 30° as shown in figure. It travels through the prism parallel to its base BC and emerges along the face AC. The refractive index of the prism is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. $\frac{\sqrt{3}}{2}$
B. $\frac{\sqrt{5}}{4}$
C. $\frac{\sqrt{5}}{2}$
D. $\frac{\sqrt{3}}{4}$

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Q7 PHYSICS Unit 2: Kinematics

A particle moving with uniform speed in a circular path maintains:

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A. varying velocity and varying acceleration.
B. constant velocity.
C. constant acceleration.
D. constant velocity but varying acceleration.

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Q8 PHYSICS Unit 17: Dual Nature of Matter and Radiation

The graph which shows the variation of ($\frac{1}{\lambda^2}$) and its kinetic energy, E is (where $\lambda$ is de Broglie wavelength of a free particle):

↻ Repeated question — also appeared in 2024 (3 sets)

A. A linear graph passing through the origin.
B. An upward parabola starting from origin.
C. A downward decaying curve.
D. A slight upward curve.

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Q8 PHYSICS Unit 17: Dual Nature of Matter and Radiation

The graph which shows the variation of $1/\lambda^2$ and its kinetic energy, $E$ is (where $\lambda$ is de Broglie wavelength of a free particle) :

↻ Repeated question — also appeared in 2024 (3 sets)

A. A linear graph passing through the origin starting from 0,0
B. A curve bending upwards
C. A curve bending downwards
D. A curve bending upwards starting from 0,0

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Q9 PHYSICS Unit 12: Current Electricity

A wire of length 'l' and resistance 100 $\Omega$ is divided into 10 equal parts. The first 5 parts are connected in series while the next 5 parts are connected in parallel. The two combinations are again connected in series. The resistance of this final combination is:

↻ Repeated question — also appeared in 2024 (5 sets)

A. 60 $\Omega$
B. 26 $\Omega$
C. 52 $\Omega$
D. 55 $\Omega$

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Q9 PHYSICS Unit 12: Current Electricity

A wire of length 'l' and resistance 100 $\Omega$ is divided into 10 equal parts. The first 5 parts are connected in series while the next 5 parts are connected in parallel. The two combinations are again connected in series. The resistance of this final combination is:

↻ Repeated question — also appeared in 2024 (5 sets)

A. 60 $\Omega$
B. 26 $\Omega$
C. 52 $\Omega$
D. 55 $\Omega$

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Q10 PHYSICS Unit 5: Rotational Motion

The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod is 2400 g cm$^2$. The length of the 400 g rod is nearly:

↻ Repeated question — also appeared in 2024 (5 sets)

A. 72.0 cm
B. 8.5 cm
C. 17.5 cm
D. 20.7 cm

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Q10 PHYSICS Unit 5: Rotational Motion

The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod is 2400 g cm$^2$. The length of the 400 g rod is nearly :

↻ Repeated question — also appeared in 2024 (5 sets)

A. 72.0 cm
B. 8.5 cm
C. 17.5 cm
D. 20.7 cm

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Q11 PHYSICS Unit 19: Electronic Devices

The output (Y) of the given logic gate is similar to the output of an/a :

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A. AND gate
B. NAND gate
C. NOR gate
D. OR gate

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Q12 PHYSICS Unit 20: Experimental Skills

In a vernier calipers, $(N + 1)$ divisions of vernier scale coincide with $N$ divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:

↻ Repeated question — also appeared in 2024 (2 sets)

A. $10(N + 1)$
B. $\frac{1}{10N}$
C. $\frac{1}{100(N + 1)}$
D. $100N$

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Q12 PHYSICS Unit 1: Physics and Measurement

In a vernier calipers, (N + 1) divisions of vernier scale coincide with N divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:

↻ Repeated question — also appeared in 2024 (1 set)

A. 10(N + 1)
B. 1 / 10N
C. 1 / 100(N + 1)
D. 100N

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Q13 PHYSICS Unit 4: Work Energy and Power

At any instant of time $t$, the displacement of any particle is given by $2t-1$ (SI unit) under the influence of force of 5N. The value of instantaneous power is (in SI unit):

↻ Repeated question — also appeared in 2024 (3 sets)

A. 6
B. 10
C. 5
D. 7

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Q14 PHYSICS Unit 11: Electrostatics

A thin spherical shell is charged by some source. The potential difference between the two points C and P (in V) shown in the figure is: (Take $1/(4\pi\epsilon_0) = 9 \times 10^9$ SI units)

↻ Repeated question — also appeared in 2024 (4 sets)

A. zero
B. 3 x 10^5
C. 1 x 10^5
D. 0.5 x 10^5

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Q14 PHYSICS Unit 11: Electrostatics

A thin spherical shell is charged by some source. The potential difference between the two points C and P in (V) shown in the figure is: (Take $\frac{1}{4\pi\epsilon_0} = 9 \times 10^9$ SI units)

↻ Repeated question — also appeared in 2024 (4 sets)

A. zero
B. 3 * 10^5
C. 1 * 10^5
D. 0.5 * 10^5

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Q15 PHYSICS Unit 7: Properties of Solids and Liquids

A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is 0.07 Nm$^{-1}$, then the excess force required to take it away from the surface is :

↻ Repeated question — also appeared in 2024 (5 sets)

A. 99 N
B. 19.8 mN
C. 198 N
D. 1.98 mN

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Q15 PHYSICS Unit 7: Properties of Solids and Liquids

A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is 0.07 Nm^-1, then the excess force required to take it away from the surface is:

↻ Repeated question — also appeared in 2024 (5 sets)

A. 99 N
B. 19.8 mN
C. 198 N
D. 1.98 mN

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Q16 PHYSICS Unit 19: Electronic Devices

A logic circuit provides the output Y as per the following truth table: (A=0,B=0; Y=1), (A=0,B=1; Y=0), (A=1,B=0; Y=1), (A=1,B=1; Y=0). The expression for the output Y is :

↻ Repeated question — also appeared in 2024 (1 set)

A. B
B. A.B + A
C. A.B + A
D. B

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Q17 PHYSICS Unit 11: Electrostatics

Given below are two statements: Assertion A: The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector p of magnitude 4 x 10^-6 Cm, is +/- 9 x 10^3 V. Reason R: V = +/- (2p) / (4\pi\epsilon_0 r^2), where r is the distance of any axial point, situated at 2 m from the centre of the dipole. In the light of the above statements, choose the correct answer from the options given below:

A. A is false but R is true.
B. Both A and R are true and R is the correct explanation of A.
C. Both A and R are true and R is NOT the correct explanation of A.
D. A is true but R is false.

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Q18 PHYSICS Unit 12: Current Electricity

The terminal voltage of the battery, whose emf is 10 V and internal resistance 1 Ω, when connected through an external resistance of 4 Ω as shown in the figure is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. 10 V
B. 4 V
C. 6 V
D. 8 V

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Q19 PHYSICS Unit 14: Electromagnetic Induction and Alternating Currents

In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:

↻ Repeated question — also appeared in 2024 (2 sets)

A. BA and DC
B. AB and DC
C. BA and CD
D. AB and CD

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Q20 PHYSICS Unit 14: Electromagnetic Induction and Alternating Currents

In an ideal transformer, the turns ratio is $N_P / N_S = 1/2$. The ratio $V_S : V_P$ is equal to (the symbols carry their usual meaning):

↻ Repeated question — also appeared in 2024 (5 sets)

A. 1:4
B. 1:2
C. 2:1
D. 1:1

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Q20 PHYSICS Unit 14: Electromagnetic Induction and Alternating Currents

In an ideal transformer, the turns ratio is $\frac{N_p}{N_s} = \frac{1}{2}$. The ratio $V_s : V_p$ is equal to (the symbols carry their usual meaning):

↻ Repeated question — also appeared in 2024 (5 sets)

A. 1 : 4
B. 1 : 2
C. 2 : 1
D. 1 : 1

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Q21 PHYSICS Unit 13: Magnetic Effects of Current and Magnetism

A tightly wound 100 turns coil of radius 10 cm carries a current of 7 A. The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as 4π x 10^-7 SI units):

↻ Repeated question — also appeared in 2024 (5 sets)

A. 44 T
B. 44 mT
C. 4.4 T
D. 4.4 mT

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Q21 PHYSICS Unit 13: Magnetic Effects of Current and Magnetism

A tightly wound 100 turns coil of radius 10 cm carries a current of 7 A. The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as $4\pi \times 10^{-7}$ SI units):

↻ Repeated question — also appeared in 2024 (5 sets)

A. 44 T
B. 44 mT
C. 4.4 T
D. 4.4 mT

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Q22 PHYSICS Unit 18: Atoms and Nuclei

Given below are two statements: Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges. Statement II: Atoms of each element are stable and emit their characteristic spectrum. In the light of the above statements, choose the most appropriate answer from the options given below:

↻ Repeated question — also appeared in 2024 (5 sets)

A. Statement I is incorrect but Statement II is correct.
B. Both Statement I and Statement II are correct.
C. Both Statement I and Statement II are incorrect.
D. Statement I is correct but Statement II is incorrect.

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Q22 PHYSICS Unit 18: Atoms and Nuclei

Given below are two statements: Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges. Statement II: Atoms of each element are stable and emit their characteristic spectrum. In the light of the above statements, choose the most appropriate answer from the options given below:

↻ Repeated question — also appeared in 2024 (5 sets)

A. Statement I is incorrect but Statement II is correct.
B. Both Statement I and Statement II are correct.
C. Both Statement I and Statement II are incorrect.
D. Statement I is correct but Statement II is incorrect.

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Q23 PHYSICS Unit 1: Physics and Measurement

The quantities which have the same dimensions as those of solid angle are:

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A. angular speed and stress
B. strain and angle
C. stress and angle
D. strain and arc

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Q23 PHYSICS Unit 1: Physics and Measurement

The quantities which have the same dimensions as those of solid angle are:

↻ Repeated question — also appeared in 2024 (4 sets)

A. angular speed and stress
B. strain and angle
C. stress and angle
D. strain and arc

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Q24 PHYSICS Unit 17: Dual Nature of Matter and Radiation

If c is the velocity of light in free space, the correct statements about photon among the following are: A. The energy of a photon is $E = h\nu$. B. The velocity of a photon is c. C. The momentum of a photon, $p = h\nu/c$. D. In a photon-electron collision, both total energy and total momentum are conserved. E. Photon possesses positive charge. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (5 sets)

A. A, B, D and E only
B. A and B only
C. A, B, C and D only
D. A, C and D only

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Q24 PHYSICS Unit 17: Dual Nature of Matter and Radiation

If $c$ is the velocity of light in free space, the correct statements about photon among the following are: A. The energy of a photon is $E = hv$. B. The velocity of a photon is c. C. The momentum of a photon, $p = \frac{hv}{c}$. D. In a photon-electron collision, both total energy and total momentum are conserved. E. Photon possesses positive charge. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (5 sets)

A. A, B, D and E only
B. A and B only
C. A, B, C and D only
D. A, C and D only

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Q25 PHYSICS Unit 5: Rotational Motion

A bob is whirled in a horizontal plane by means of a string with an initial speed of $\omega$ rpm. The tension in the string is $T$. If speed becomes $2\omega$ while keeping the same radius, the tension in the string becomes:

↻ Repeated question — also appeared in 2024 (2 sets)

A. $\sqrt{2}T$
B. $T$
C. $4T$
D. $T/4$

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Q26 PHYSICS Unit 10: Oscillations and Waves

If $x = 5 \sin(\pi t + \frac{\pi}{3}) \text{ m}$ represents the motion of a particle executing simple harmonic motion, the amplitude and time period of motion, respectively, are:

↻ Repeated question — also appeared in 2024 (4 sets)

A. 5 m, 1 s
B. 5 cm, 2 s
C. 5 m, 2 s
D. 5 cm, 1 s

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Q27 PHYSICS Unit 8: Thermodynamics

A thermodynamic system is taken through the cycle abeda. The work done by the gas along the path be is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. -60 J
B. zero
C. 30 J
D. -90 J

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Q28 PHYSICS Unit 18: Atoms and Nuclei

In the nuclear emission stated above ($\text{}_{82}^{290}X \xrightarrow{\alpha} Y \xrightarrow{e^+} Z \xrightarrow{\beta^-} P \xrightarrow{e^-} Q$), the mass number and atomic number of the product Q respectively, are:

↻ Repeated question — also appeared in 2024 (3 sets)

A. 286, 81
B. 280, 81
C. 286, 80
D. 288, 82

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Q29 PHYSICS Unit 3: Laws of Motion

Two bodies A and B of same mass undergo completely inelastic one dimensional collision. The body A moves with velocity $v_1$ while body B is at rest before collision. The velocity of the system after collision is $v_2$. The ratio $v_1 : v_2$ is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. 1 : 4
B. 1 : 2
C. 2 : 1
D. 4 : 1

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Q30 PHYSICS Unit 11: Electrostatics

In the following circuit, the equivalent capacitance between terminal A and terminal B is:

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A. 4 µF
B. 2 µF
C. 1 µF
D. 0.5 µF

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Q31 PHYSICS Unit 3: Laws of Motion

A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A and B are 2 kg and 3 kg, respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:

↻ Repeated question — also appeared in 2024 (5 sets)

A. 10 N
B. zero
C. 4 N
D. 6 N

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Q31 PHYSICS Unit 3: Laws of Motion

A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A and B are 2 kg and 3 kg, respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:

↻ Repeated question — also appeared in 2024 (5 sets)

A. 10 N
B. zero
C. 4 N
D. 6 N

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Q32 PHYSICS Unit 5: Rotational Motion

A wheel of a bullock cart is rolling on a level road as shown in the figure below. If its linear speed is $v$ in the direction shown, which one of the following options is correct (P and Q are any highest and lowest points on the wheel, respectively)?

↻ Repeated question — also appeared in 2024 (3 sets)

A. Point P has zero speed.
B. Point P moves slower than point Q.
C. Point P moves faster than point Q.
D. Both the points P and Q move with equal speed.

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Q33 PHYSICS Unit 6: Gravitation

The mass of a planet is 1/10 th that of the earth and its diameter is half that of the earth. The acceleration due to gravity on that planet is:

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A. 3.92 m s^-2
B. 19.6 m s^-2
C. 9.8 m s^-2
D. 4.9 m s^-2

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Q34 PHYSICS Unit 7: Properties of Solids and Liquids

The maximum elongation of a steel wire of 1 m length if the elastic limit of steel and its Young's modulus, respectively, are $8 \times 10^8 N m^{-2}$ and $2 \times 10^{11} N m^{-2}$, is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. 8 mm
B. 4 mm
C. 0.4 mm
D. 40 mm

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Q35 PHYSICS Unit 16: Optics

If the monochromatic source in Young's double slit experiment is replaced by white light, then

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A. all bright fringes will be of equal width.
B. interference pattern will disappear.
C. there will be a central dark fringe surrounded by a few coloured fringes.
D. there will be a central bright white fringe surrounded by a few coloured fringes.

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Q36 PHYSICS Unit 16: Optics

A small telescope has an objective of focal length 140 cm and an eye piece of focal length 5.0 cm. The magnifying power of telescope for viewing a distant object is:

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A. 32
B. 34
C. 28
D. 17

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Q38 PHYSICS Unit 12: Current Electricity

A 10 µF capacitor is connected to a 210 V, 50 Hz source as shown in figure. The peak current in the circuit is nearly (π = 3.14):

A. 0.35 A
B. 0.58 A
C. 0.93 A
D. 1.20 A

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Q38 PHYSICS Unit 14: Electromagnetic Induction and Alternating Currents

A $10 \, \mu \text{F}$ capacitor is connected to a $210 \, \text{V}$, $50 \, \text{Hz}$ source as shown in figure. The peak current in the circuit is nearly ($\pi = 3.14$):

↻ Repeated question — also appeared in 2024 (1 set)

A. 0.35 A
B. 0.58 A
C. 0.93 A
D. 1.20 A

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Q40 PHYSICS Unit 12: Current Electricity

Two heaters A and B have power rating of 1 kW and 2 kW, respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is:

↻ Repeated question — also appeared in 2024 (1 set)

A. 2:3
B. 1:1
C. 2:9
D. 1:2

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Q40 PHYSICS Unit 4: Work Energy and Power

Two heaters A and B have power rating of $1 \, \text{kW}$ and $2 \, \text{kW}$, respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. 2:3
B. 1:1
C. 2:9
D. 1:2

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Q41 PHYSICS Unit 2: Kinematics

The velocity ($v$)-time ($t$) plot of the motion of a body is shown below. The acceleration ($a$)-time ($t$) graph that best suits this motion is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. Graph showing constant positive, zero, and constant negative acceleration
B. Graph showing constant positive and constant negative
C. Graph showing constant positive and zero
D. Graph showing zero and constant negative

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Q42 PHYSICS Unit 10: Oscillations and Waves

If the mass of the bob in a simple pendulum is increased to thrice its original mass and its length is made half its original length, then the new time period of oscillation is $\frac{x}{2}$ times its original time period. Then the value of $x$ is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. 4
B. $\sqrt{3}$
C. $\sqrt{2}$
D. $2\sqrt{3}$

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Q43 PHYSICS Unit 7: Properties of Solids and Liquids

A metallic bar of Young's modulus, $0.5 \times 10^{11} \, \text{N m}^{-2}$ and coefficient of linear thermal expansion $10^{-5} \, ^\circ \text{C}^{-1}$, length $1 \, \text{m}$ and area of cross-section $10^{-3} \, \text{m}^2$ is heated from $0^\circ \text{C}$ to $100^\circ \text{C}$ without expansion or bending. The compressive force developed in it is:

A. $2 \times 10^3 \, \text{N}$
B. $5 \times 10^3 \, \text{N}$
C. $50 \times 10^3 \, \text{N}$
D. $100 \times 10^3 \, \text{N}$

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Q45 PHYSICS Unit 15: Electromagnetic Waves

The property which is not of an electromagnetic wave travelling in free space is that:

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A. they originate from charges moving with uniform speed.
B. they are transverse in nature.
C. the energy density in electric field is equal to energy density in magnetic field.
D. they travel with a speed equal to $\frac{1}{\sqrt{\mu_0 \epsilon_0}}$.

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Q45 PHYSICS Unit 15: Electromagnetic Waves

The property which is not of an electromagnetic wave travelling in free space is that :

↻ Repeated question — also appeared in 2024 (4 sets)

A. they originate from charges moving with uniform speed.
B. they are transverse in nature.
C. the energy density in electric field is equal to energy density in magnetic field.
D. they travel with a speed equal to $\frac{1}{\sqrt{\mu_0 \epsilon_0}}$.

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Q46 PHYSICS Unit 11: Electrostatics

A parallel plate capacitor is charged by connecting it to a battery through a resistor. If $I$ is the current in the circuit, then in the gap between the plates:

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A. displacement current of magnitude greater than $I$ flows but can be in any direction.
B. there is no current.
C. displacement current of magnitude equal to $I$ flows in the same direction as $I$.
D. displacement current of magnitude equal to $I$ flows in a direction opposite to that of $I$.

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Q46 PHYSICS Unit 11: Electrostatics

A parallel plate capacitor is charged by connecting it to a battery through a resistor. If $I$ is the current in the circuit, then in the gap between the plates :

↻ Repeated question — also appeared in 2024 (2 sets)

A. displacement current of magnitude greater than $I$ flows but can be in any direction.
B. there is no current.
C. displacement current of magnitude equal to $I$ flows in the same direction as $I$.
D. displacement current of magnitude equal to $I$ flows in a direction opposite to that of $I$.

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Q47 PHYSICS Unit 13: Magnetic Effects of Current and Magnetism

An iron bar of length $L$ has magnetic moment $M$. It is bent at the middle of its length such that the two arms make an angle $60^\circ$ with each other. The magnetic moment of this new magnet is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. $M/\sqrt{3}$
B. $M$
C. $M/2$
D. $2M$

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Q47 PHYSICS Unit 13: Magnetic Effects of Current and Magnetism

An iron bar of length $L$ has magnetic moment $M$. It is bent at the middle of its length such that the two arms make an angle $60^\circ$ with each other. The magnetic moment of this new magnet is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. $\frac{M}{\sqrt{3}}$
B. $M$
C. $\frac{M}{2}$
D. $2M$

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Q48 PHYSICS Unit 6: Gravitation

The minimum energy required to launch a satellite of mass $m$ from the surface of earth of mass $M$ and radius $R$ in a circular orbit at an altitude of $2R$ from the surface of the earth is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. $\frac{GmM}{3R}$
B. $\frac{5GmM}{6R}$
C. $\frac{2GmM}{3R}$
D. $\frac{GmM}{2R}$

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Q49 PHYSICS Unit 9: Kinetic Theory of Gases

The following graph represents the T-V curves of an ideal gas (where T is the temperature and V the volume) at three pressures $P_1, P_2$ and $P_3$ compared with those of Charles's law represented as dotted lines. Then the correct relation is:

↻ Repeated question — also appeared in 2024 (1 set)

A. $P_1 > P_2 > P_3$
B. $P_3 > P_2 > P_1$
C. $P_1 > P_3 > P_2$
D. $P_2 > P_1 > P_3$

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Q50 PHYSICS Unit 1: Physics and Measurement

A force defined by $F = \alpha t^2 + \beta t$ acts on a particle at a given time $t$. The factor which is dimensionless, if $\alpha$ and $\beta$ are constants, is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. $\alpha\beta/t$
B. $\beta t/\alpha$
C. $\alpha t/\beta$
D. $\alpha\beta t$

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Q51 CHEMISTRY Unit 18: Organic Compounds Containing Nitrogen

Given below are two statements: Statement I : Aniline does not undergo Friedel-Crafts alkylation reaction. Statement II: Aniline cannot be prepared through Gabriel synthesis.

A. Statement I is incorrect but Statement II is true.
B. Both Statement I and Statement II are true.
C. Both Statement I and Statement II are false.
D. Statement I is correct but Statement II is false.

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Q52 CHEMISTRY Unit 3: Chemical Bonding and Molecular Structure

Match List I with List II.

A. A-II, B-III, C-IV, D-I
B. A-I, B-IV, C-II, D-III
C. A-II, B-IV, C-III, D-I
D. A-III, B-IV, C-I, D-II

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Q52 CHEMISTRY Unit 3: Chemical Bonding and Molecular Structure

↻ Repeated question — also appeared in 2024 (3 sets)

A. A-II, B-III, C-IV, D-I
B. A-I, B-IV, C-II, D-III
C. A-II, B-IV, C-III, D-I
D. A-III, B-IV, C-I, D-II

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Q53 CHEMISTRY Unit 3: Chemical Bonding and Molecular Structure

Match List I with List II. List I (Molecule): A. ethane, B. ethene, C. carbon molecule, C2, D. ethyne. List II (Number and types of bond/s between two carbon atoms): I. one $\sigma$-bond and two $\pi$-bonds, II. two $\pi$-bonds, III. one $\sigma$-bond, IV. one $\sigma$-bond and one $\pi$-bond.

↻ Repeated question — also appeared in 2024 (1 set)

A. A-III, B-IV, C-I, D-II
B. A-I, B-IV, C-II, D-III
C. A-IV, B-III, C-II, D-I
D. A-III, B-IV, C-II, D-I

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Q54 CHEMISTRY Unit 6: Equilibrium

For the reaction $2A \rightleftharpoons B + C, K_c = 4 \times 10^{-3}$. At a given time, the composition of reaction mixture is: $[A]=[B]=[C]=2 \times 10^{-3} M$. Then, which of the following is correct?

↻ Repeated question — also appeared in 2024 (4 sets)

A. Reaction has gone to completion in forward direction.
B. Reaction is at equilibrium.
C. Reaction has a tendency to go in forward direction.
D. Reaction has a tendency to go in backward direction.

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Q55 PHYSICS Unit 8: Thermodynamics

Match List I with List II. List I (Process) | List II (Conditions) A. Isothermal process | I. No heat exchange B. Isochoric process | II. Carried out at constant temperature C. Isobaric process | III. Carried out at constant volume D. Adiabatic process | IV. Carried out at constant pressure Choose the correct answer from the options given below:

A. A-II, B-III, C-IV, D-I
B. A-IV, B-III, C-II, D-I
C. A-IV, B-II, C-III, D-I
D. A-I, B-II, C-III, D-IV

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Q56 CHEMISTRY Unit 2: Atomic Structure

Match List I with List II. List I (Quantum Number) | List II (Information provided) A. $m_l$ | I. shape of orbital B. $m_s$ | II. size of orbital C. $l$ | III. orientation of orbital D. $n$ | IV. orientation of spin of electron Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. A-II, B-I, C-IV, D-III
B. A-I, B-III, C-II, D-IV
C. A-III, B-IV, C-I, D-II
D. A-III, B-IV, C-II, D-I

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Q57 CHEMISTRY Unit 9: Classification of Elements and Periodicity in Properties

Arrange the following elements in increasing order of first ionization enthalpy: Li, Be, B, C, N Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. Li < Be < N < B < C
B. Li < Be < B < C < N
C. Li < B < Be < C < N
D. Li < Be < C < B < N

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Q58 CHEMISTRY Unit 10: p-Block Elements

Among Group 16 elements, which one does NOT show -2 oxidation state?

↻ Repeated question — also appeared in 2024 (4 sets)

A. Po
B. O
C. Se
D. Te

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Q59 CHEMISTRY Unit 6: Equilibrium

In which of the following equilibria, $K_p$ and $K_c$ are NOT equal?

↻ Repeated question — also appeared in 2024 (4 sets)

A. 2 BrCl(g) $\rightleftharpoons$ $Br_2(g)$ + $Cl_2(g)$
B. $PCl_5(g)$ $\rightleftharpoons$ $PCl_3(g)$ + $Cl_2(g)$
C. $H_2(g)$ + $I_2(g)$ $\rightleftharpoons$ 2 HI(g)
D. $CO(g)$ + $H_2O(g)$ $\rightleftharpoons$ $CO_2(g)$ + $H_2(g)$

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Q60 CHEMISTRY Unit 19: Biomolecules

The reagents with which glucose does not react to give the corresponding tests/products are A. Tollen's reagent B. Schiff's reagent C. HCN D. $NH_2OH$ E. $NaHSO_3$ Choose the correct options from the given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. E and D
B. B and C
C. A and D
D. B and E

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Q60 CHEMISTRY Unit 19: Biomolecules

The reagents with which glucose does not react to give the corresponding tests/products are: A. Tollen's reagent B. Schiff's reagent C. HCN D. NH2OH E. NaHSO3 Choose the correct options from the given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. (1) E and D
B. (2) B and C
C. (3) A and D
D. (4) B and E

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Q62 CHEMISTRY Unit 11: d- and f-Block Elements

The $E^0$ value for the $Mn^{3+}/Mn^{2+}$ couple is more positive than that of $Cr^{3+}/Cr^{2+}$ or $Fe^{3+}/Fe^{2+}$ due to change of

↻ Repeated question — also appeared in 2024 (4 sets)

A. $d^3$ to $d^5$ configuration
B. $d^5$ to $d^4$ configuration
C. $d^5$ to $d^2$ configuration
D. $d^4$ to $d^5$ configuration

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Q62 CHEMISTRY Unit 11: d- and f-Block Elements

The $E^0$ value for the $Mn^{3+}/Mn^{2+}$ couple is more positive than that of $Cr^{3+}/Cr^{2+}$ or $Fe^{3+}/Fe^{2+}$ due to change of:

↻ Repeated question — also appeared in 2024 (4 sets)

A. (1) $d^3$ to $d^5$ configuration
B. (2) $d^5$ to $d^4$ configuration
C. (3) $d^5$ to $d^2$ configuration
D. (4) $d^4$ to $d^5$ configuration

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Q63 CHEMISTRY Unit 12: Coordination Compounds

Given below are two statements: Statement I: Both $[Co(NH_3)_6]^{3+}$ and $[CoF_6]^{3-}$ complexes are octahedral but differ in their magnetic behaviour. Statement II: $[Co(NH_3)_6]^{3+}$ is diamagnetic whereas $[CoF_6]^{3-}$ is paramagnetic. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. Statement I is false but Statement II is true.
B. Both Statement I and Statement II are true.
C. Both Statement I and Statement II are false.
D. Statement I is true but Statement II is false.

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Q64 CHEMISTRY Unit 17: Organic Compounds Containing Oxygen

Fehling's solution 'A' is:

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A. (1) aqueous sodium citrate
B. (2) aqueous copper sulphate
C. (3) alkaline copper sulphate
D. (4) alkaline solution of sodium potassium tartrate (Rochelle's salt)

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Q65 CHEMISTRY Unit 4: Chemical Thermodynamics

In which of the following processes entropy increases? A. A liquid evaporates to vapour. B. Temperature of a crystalline solid lowered from 130 K to 0 K. C. $2 NaHCO_3(s) \rightarrow Na_2CO_3(s) + CO_2(g) + H_2O(g)$ D. $Cl_2(g) \rightarrow 2 Cl(g)$ Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (3 sets)

A. (1) C and D
B. (2) A and C
C. (3) A, B and D
D. (4) A, C and D

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Q66 CHEMISTRY Unit 2: Atomic Structure

The energy of an electron in the ground state ($n=1$) for $He^+$ ion is $-x$ J, then that for an electron in $n=2$ state for $Be^{3+}$ ion in J is:

↻ Repeated question — also appeared in 2024 (1 set)

A. (1) $-4/9 x$
B. (2) $-x$
C. (3) $-x/9$
D. (4) $-4x$

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Q68 CHEMISTRY Unit 8: Chemical Kinetics

Activation energy of any chemical reaction can be calculated if one knows the value of:

↻ Repeated question — also appeared in 2024 (5 sets)

A. (1) rate constant at two different temperatures.
B. (2) rate constant at standard temperature.
C. (3) probability of collision.
D. (4) orientation of reactant molecules during collision.

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Q68 CHEMISTRY Unit 8: Chemical Kinetics

Activation energy of any chemical reaction can be calculated if one knows the value of

↻ Repeated question — also appeared in 2024 (5 sets)

A. rate constant at two different temperatures.
B. rate constant at standard temperature.
C. probability of collision.
D. orientation of reactant molecules during collision.

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Q70 CHEMISTRY Unit 15: Hydrocarbons

Given below are two statements: Statement I: The boiling point of three isomeric pentanes follows the order n-pentane > isopentane > neopentane Statement II: When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point. In the light of the above statements, choose the most appropriate answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. Statement I is incorrect but Statement II is correct.
B. Both Statement I and Statement II are correct.
C. Both Statement I and Statement II are incorrect.
D. Statement I is correct but Statement II is incorrect.

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Q71 CHEMISTRY Unit 17: Organic Compounds Containing Oxygen

Which one of the following alcohols reacts instantaneously with Lucas reagent?

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A. 2-methyl-2-propanol
B. 1-butanol
C. 2-butanol
D. 2-methyl-1-propanol

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Q72 CHEMISTRY Unit 5: Solutions

The Henry's law constant ($K_H$) values of three gases (A, B, C) in water are 145, $2 \times 10^{-5}$ and 35 kbar, respectively. The solubility of these gases in water follow the order:

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A. A > B > C
B. B > A > C
C. B > C > A
D. A > C > B

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Q73 CHEMISTRY Unit 8: Chemical Kinetics

Which plot of $\ln k$ vs $\frac{1}{T}$ is consistent with Arrhenius equation?

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A. Graph with a negative slope
B. Graph with a positive slope
C. Graph with a positive slope passing through origin
D. Graph with a positive slope with a specific intercept

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Q74 CHEMISTRY Unit 13: Purification and Characterisation of Organic Compounds

On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as

↻ Repeated question — also appeared in 2024 (4 sets)

A. Chromatography
B. Crystallization
C. Sublimation
D. Distillation

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Q76 CHEMISTRY Unit 1: Some Basic Concepts in Chemistry

1 gram of sodium hydroxide was treated with 25 mL of 0.75 M HCl solution, the mass of sodium hydroxide left unreacted is equal to:

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A. 200 mg
B. 750 mg
C. 250 mg
D. Zero mg

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Q77 CHEMISTRY Unit 7: Redox Reactions and Electrochemistry

Which reaction is NOT a redox reaction?

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A. BaCl2 + Na2SO4 ➔ BaSO4 + 2 NaCl
B. Zn + CuSO4 ➔ ZnSO4 + Cu
C. 2 KClO3 + I2 ➔ 2 KIO3 + Cl2
D. H2 + Cl2 ➔ 2 HCl

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Q77 CHEMISTRY Unit 7: Redox Reactions and Electrochemistry

Which reaction is NOT a redox reaction?

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A. BaCl2 + Na2SO4 -> BaSO4 + 2 NaCl
B. Zn + CuSO4 -> ZnSO4 + Cu
C. 2 KClO3 + I2 -> 2 KIO3 + Cl2
D. H2 + Cl2 -> 2 HCl

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Q78 CHEMISTRY Unit 11: d- and f-Block Elements

'Spin only' magnetic moment is same for which of the following ions? A. Ti3+ B. Cr2+ C. Mn2+ D. Fe2+ E. Sc3+

A. A and D only
B. B and D only
C. A and E only
D. B and C only

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Q79 CHEMISTRY Unit 1: Some Basic Concepts in Chemistry

The highest number of helium atoms is in:

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A. 2.271098 L of helium at STP
B. 4 mol of helium
C. 4 u of helium
D. 4 g of helium

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Q80 CHEMISTRY Unit 12: Coordination Compounds

Match List I with List II. List I (Complex): A. [Co(NH3)5(NO2)]Cl2 B. [Co(NH3)5(SO4)]Br C. [Co(NH3)6][Cr(CN)6] D. [Co(H2O)6]Cl3 List II (Type of isomerism): I. Solvate isomerism II. Linkage isomerism III. Ionization isomerism IV. Coordination isomerism

↻ Repeated question — also appeared in 2024 (2 sets)

A. A-II, B-IV, C-III, D-I
B. A-II, B-III, C-IV, D-I
C. A-I, B-III, C-IV, D-II
D. A-I, B-IV, C-III, D-II

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Q81 CHEMISTRY Unit 10: p-Block Elements

Given below are two statements: Statement I : The boiling point of hydrides of Group 16 elements follow the order H2O > H2Te > H2Se > H2S. Statement II : On the basis of molecular mass, H2O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H2O, it has higher boiling point. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. Statement I is false but Statement II is true.
B. Both Statement I and Statement II are true.
C. Both Statement I and Statement II are false.
D. Statement I is true but Statement II is false.

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Q82 CHEMISTRY Unit 15: Hydrocarbons

A compound with a molecular formula of C6H14 has two tertiary carbons. Its IUPAC name is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. 2,2-dimethylbutane
B. n-hexane
C. 2-methylpentane
D. 2,3-dimethylbutane

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Q82 CHEMISTRY Unit 15: Hydrocarbons

A compound with a molecular formula of $C_6H_{14}$ has two tertiary carbons. Its IUPAC name is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. 2,2-dimethylbutane
B. n-hexane
C. 2-methylpentane
D. 2,3-dimethylbutane

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Q83 CHEMISTRY Unit 7: Redox Reactions and Electrochemistry

Match List I with List II. List I (Conversion): A. 1 mol of H2O to O2 B. 1 mol of MnO4- to Mn2+ C. 1.5 mol of Ca from molten CaCl2 D. 1 mol of FeO to Fe2O3 List II (Number of Faraday required): I. 3F II. 2F III. 1F IV. 5F

↻ Repeated question — also appeared in 2024 (1 set)

A. A-III, B-IV, C-II, D-I
B. A-II, B-IV, C-I, D-III
C. A-III, B-IV, C-I, D-II
D. A-II, B-III, C-I, D-IV

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Q85 CHEMISTRY Unit 9: Classification of Elements and Periodicity in Properties

Arrange the following elements in increasing order of electronegativity: N, O, F, C, Si

↻ Repeated question — also appeared in 2024 (2 sets)

A. F < O < N < C < Si
B. Si < C < N < O < F
C. Si < C < O < N < F
D. O < F < N < C < Si

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Q87 CHEMISTRY Unit 3: Chemical Bonding and Molecular Structure

Identify the correct answer.

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A. Three canonical forms can be drawn for $CO_3^{2-}$ ion.
B. Three resonance structures can be drawn for ozone.
C. $BF_3$ has non-zero dipole moment.
D. Dipole moment of $NF_3$ is greater than that of $NH_3$.

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Q88 CHEMISTRY Unit 4: Chemical Thermodynamics

The work done during reversible isothermal expansion of one mole of hydrogen gas at 25°C from pressure of 20 atmosphere to 10 atmosphere is: (Given R = 2.0 cal $K^{-1} mol^{-1}$)

↻ Repeated question — also appeared in 2024 (4 sets)

A. 100 calories
B. 0 calorie
C. -413.14 calories
D. 413.14 calories

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Q90 CHEMISTRY Unit 15: Hydrocarbons

For the given reaction: (cyclohexyl)-C=CH-(cyclohexyl) treated with $KMnO_4/H^+$ produces 'P'. 'P' is:

A. (cyclohexyl)-C(=O)-C(=O)-(cyclohexyl)
B. (cyclohexyl)-CHO
C. (cyclohexyl)-COOH
D. (cyclohexyl)-CH(OH)-CH(OH)-(cyclohexyl)

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Q91 CHEMISTRY Unit 11: d- and f-Block Elements

The pair of lanthanoid ions which are diamagnetic is

↻ Repeated question — also appeared in 2024 (5 sets)

A. $Pm^{3+}$ and $Sm^{3+}$
B. $Ce^{4+}$ and $Yb^{2+}$
C. $Ce^{3+}$ and $Eu^{2+}$
D. $Gd^{3+}$ and $Eu^{3+}$

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Q91 CHEMISTRY Unit 11: d- and f-Block Elements

The pair of lanthanoid ions which are diamagnetic is:

↻ Repeated question — also appeared in 2024 (5 sets)

A. $Pm^{3+}$ and $Sm^{3+}$
B. $Ce^{4+}$ and $Yb^{2+}$
C. $Ce^{3+}$ and $Eu^{2+}$
D. $Gd^{3+}$ and $Eu^{3+}$

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Q92 CHEMISTRY Unit 16: Organic Compounds Containing Halogens

The products A and B obtained in the following reactions, respectively, are $3ROH + PCl_3 \rightarrow 3RCl + A$ $ROH + PCl_5 \rightarrow RCl + HCl + B$

↻ Repeated question — also appeared in 2024 (3 sets)

A. $H_3PO_3$ and $POCl_3$
B. $POCl_3$ and $H_3PO_3$
C. $POCl_3$ and $H_3PO_4$
D. $H_3PO_4$ and $POCl_3$

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Q92 CHEMISTRY Unit 14: Some Basic Principles of Organic Chemistry

The products A and B obtained in the following reactions, respectively, are: $3ROH + PCl_3 \rightarrow 3RCl + A$ $ROH + PCl_5 \rightarrow RCl + HCl + B$

A. $H_3PO_3$ and $POCl_3$
B. $POCl_3$ and $H_3PO_3$
C. $POCl_3$ and $H_3PO_4$
D. $H_3PO_4$ and $POCl_3$

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Q93 CHEMISTRY Unit 20: Principles Related to Practical Chemistry

Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI. A. $Al^{3+}$ B. $Cu^{2+}$ C. $Ba^{2+}$ D. $Co^{2+}$ E. $Mg^{2+}$

A. E, A, B, C, D
B. B, A, D, C, E
C. B, C, A, D, E
D. E, C, D, B, A

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Q94 CHEMISTRY Unit 12: Coordination Compounds

Given below are two statements : Statement I : $[Co(NH_3)_6]^{3+}$ is a homoleptic complex whereas $[Co(NH_3)_4Cl_2]^+$ is a heteroleptic complex. Statement II: Complex $[Co(NH_3)_6]^{3+}$ has only one kind of ligands but $[Co(NH_3)_4Cl_2]^+$ has more than one kind of ligands.

↻ Repeated question — also appeared in 2024 (1 set)

A. Statement I is false but Statement II is true.
B. Both Statement I and Statement II are true.
C. Both Statement I and Statement II are false.
D. Statement I is true but Statement II is false.

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Q94 CHEMISTRY Unit 12: Coordination Compounds

Given below are two statements: Statement I: $[Co(NH_3)_6]^{3+}$ is a homoleptic complex whereas $[Co(NH_3)_4Cl_2]^+$ is a heteroleptic complex. Statement II: Complex $[Co(NH_3)_6]^{3+}$ has only one kind of ligands but $[Co(NH_3)_4Cl_2]^+$ has more than one kind of ligands. In the light of the above statements, choose the correct answer:

↻ Repeated question — also appeared in 2024 (4 sets)

A. Statement I is false but Statement II is true.
B. Both Statement I and Statement II are true.
C. Both Statement I and Statement II are false.
D. Statement I is true but Statement II is false.

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Q95 CHEMISTRY Unit 1: Some Basic Concepts in Chemistry

A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is: (Given atomic masses of A = 64; B = 40; C = 32 u)

↻ Repeated question — also appeared in 2024 (5 sets)

A. $ABC_4$
B. $A_2BC_2$
C. $ABC_3$
D. $AB_2C_2$

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Q95 CHEMISTRY Unit 1: Some Basic Concepts in Chemistry

A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is: (Given atomic masses of A = 64; B = 40; C = 32 u)

↻ Repeated question — also appeared in 2024 (5 sets)

A. ABC4
B. A2BC2
C. ABC3
D. AB2C2

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Q96 CHEMISTRY Unit 5: Solutions

The plot of osmotic pressure ($\Pi$) vs concentration (mol $L^{-1}$) for a solution gives a straight line with slope 25.73 L bar $mol^{-1}$. The temperature at which the osmotic pressure measurement is done is: (Use R = 0.083 L bar $mol^{-1}$ $K^{-1}$)

↻ Repeated question — also appeared in 2024 (3 sets)

A. 12.05°C
B. 37°C
C. 310°C
D. 25.73°C

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Q97 CHEMISTRY Unit 14: Some Basic Principles of Organic Chemistry

Identify the major product C formed in the following reaction sequence: $CH_3-CH_2-CH_2-I \xrightarrow{NaCN} A \xrightarrow{OH^-, \text{partial hydrolysis}} B \xrightarrow{NaOH, Br_2} C$.

↻ Repeated question — also appeared in 2024 (1 set)

A. $\alpha$-bromobutanoic acid
B. propylamine
C. butylamine
D. butanamide

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Q98 CHEMISTRY Unit 20: Principles Related to Practical Chemistry

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of $Fe^{2+}$ ion?

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A. dilute sulphuric acid
B. dilute hydrochloric acid
C. concentrated sulphuric acid
D. dilute nitric acid

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Q98 CHEMISTRY Unit 11: d- and f-Block Elements

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of $Fe^{2+}$ ion?

A. dilute sulphuric acid
B. dilute hydrochloric acid
C. concentrated sulphuric acid
D. dilute nitric acid

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Q99 CHEMISTRY Unit 8: Chemical Kinetics

The rate of a reaction quadruples when temperature changes from 27°C to 57°C. Calculate the energy of activation. Given R = 8.314 J $K^{-1}$ $mol^{-1}$, log 4 = 0.6021

↻ Repeated question — also appeared in 2024 (3 sets)

A. 3804 kJ/mol
B. 38.04 kJ/mol
C. 380.4 kJ/mol
D. 3.80 kJ/mol

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Q100 CHEMISTRY Unit 7: Redox Reactions and Electrochemistry

Mass in grams of copper deposited by passing 9.6487 A current through a voltmeter containing copper sulphate solution for 100 seconds is: (Given: Molar mass of Cu: 63 g $mol^{-1}$, 1F = 96487 C)

↻ Repeated question — also appeared in 2024 (5 sets)

A. 0.0315 g
B. 3.15 g
C. 0.315 g
D. 31.5 g

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Q100 CHEMISTRY Unit 7: Redox Reactions and Electrochemistry

Mass in grams of copper deposited by passing 9.6487 A current through a voltmeter containing copper sulphate solution for 100 seconds is: (Given: Molar mass of Cu: 63 g $mol^{-1}$, 1F = 96487 C)

↻ Repeated question — also appeared in 2024 (5 sets)

A. 0.0315 g
B. 3.15 g
C. 0.315 g
D. 31.5 g

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Q101 BIOLOGY Unit 3: Cell Structure and Function

The cofactor of the enzyme carboxypeptidase is:

↻ Repeated question — also appeared in 2024 (4 sets)

A. Haem
B. Zinc
C. Niacin
D. Flavin

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Q102 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Given below are two statements: Statement I : Parenchyma is living but collenchyma is dead tissue. Statement II : Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. Statement I is false but Statement II is true
B. Both Statement I and Statement II are true
C. Both Statement I and Statement II are false
D. Statement I is true but Statement II is false

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Q103 BIOLOGY Unit 3: Cell Structure and Function

Spindle fibers attach to kinetochores of chromosomes during

↻ Repeated question — also appeared in 2024 (3 sets)

A. Telophase
B. Prophase
C. Metaphase
D. Anaphase

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Q104 BIOLOGY Unit 7: Genetics and Evolution

In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it?

↻ Repeated question — also appeared in 2024 (4 sets)

A. BB/Bb
B. BB
C. bb
D. Bb

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Q105 BIOLOGY Unit 10: Ecology and Environment

The equation of Verhulst-Pearl logistic growth is $$\frac{dN}{dt} = rN \left[ \frac{K-N}{K} \right]$$ From this equation, K indicates:

↻ Repeated question — also appeared in 2024 (1 set)

A. Population density
B. Intrinsic rate of natural increase
C. Biotic potential
D. Carrying capacity

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Q106 BIOLOGY Unit 4: Plant Physiology

How many molecules of ATP and NADPH are required for every molecule of $CO_2$ fixed in the Calvin cycle?

↻ Repeated question — also appeared in 2024 (4 sets)

A. 3 molecules of ATP and 2 molecules of NADPH
B. 2 molecules of ATP and 3 molecules of NADPH
C. 2 molecules of ATP and 2 molecules of NADPH
D. 3 molecules of ATP and 3 molecules of NADPH

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Q107 BIOLOGY Unit 1: Diversity in Living World

Match List I with List II List I | List II --- | --- A. Clostridium butylicum | I. Ethanol B. Saccharomyces cerevisiae | II. Streptokinase C. Trichoderma polysporum | III. Butyric acid D. Streptococcus sp. | IV. Cyclosporin-A Choose the correct answer from the options given below:

A. A-IV, B-I, C-III, D-II
B. A-III, B-I, C-II, D-IV
C. A-II, B-IV, C-III, D-I
D. A-III, B-I, C-IV, D-II

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Q108 BIOLOGY Unit 10: Ecology and Environment

These are regarded as major causes of biodiversity loss: A. Over exploitation B. Co-extinction C. Mutation D. Habitat loss and fragmentation E. Migration Choose the correct option:

↻ Repeated question — also appeared in 2024 (4 sets)

A. A, B and D only
B. A, C and D only
C. A, B, C and D only
D. A, B and E only

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Q109 BIOLOGY Unit 3: Cell Structure and Function

Given below are two statements: Statement I: Chromosomes become gradually visible under light microscope during leptotene stage. Statement II: The beginning of diplotene stage is recognized by dissolution of synaptonemal complex. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. Statement I is false but Statement II is true
B. Both Statement I and Statement II are true
C. Both Statement I and Statement II are false
D. Statement I is true but Statement II is false

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Q110 BIOLOGY Unit 4: Plant Physiology

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

↻ Repeated question — also appeared in 2024 (4 sets)

A. can help in cell division in grasses, to produce growth.
B. promotes apical dominance.
C. promotes abscission of mature leaves only.
D. does not affect mature monocotyledonous plants.

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Q111 BIOLOGY Unit 7: Genetics and Evolution

A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

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A. Red, Pink as well as white flowered plants
B. Only red flowered plants
C. Red flowered as well as pink flowered plants
D. Only pink flowered plants

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Q112 BIOLOGY Unit 4: Plant Physiology

Which of the following are required for the dark reaction of photosynthesis? A. Light B. Chlorophyll C. CO2 D. ATP E. NADPH Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. D and E only
B. A, B and C only
C. B, C and D only
D. C, D and E only

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Q112 BIOLOGY Unit 4: Plant Physiology

Which of the following are required for the dark reaction of photosynthesis? A. Light B. Chlorophyll C. CO$_2$ D. ATP E. NADPH Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. (1) D and E only
B. (2) A, B and C only
C. (3) B, C and D only
D. (4) C, D and E only

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Q113 BIOLOGY Unit 9: Biotechnology and Its Applications

The lactose present in the growth medium of bacteria is transported to the cell by the action of:

↻ Repeated question — also appeared in 2024 (2 sets)

A. Polymerase
B. Beta-galactosidase
C. Acetylase
D. Permease

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Q113 BIOLOGY Unit 9: Biotechnology and Its Applications

The lactose present in the growth medium of bacteria is transported to the cell by the action of:

↻ Repeated question — also appeared in 2024 (2 sets)

A. (1) Polymerase
B. (2) Beta-galactosidase
C. (3) Acetylase
D. (4) Permease

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Q114 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Identify the type of flowers based on the position of calyx, corolla and androecium with respect to the ovary from the given figures (a) and (b)

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A. (a) Perigynous; (b) Perigynous
B. (a) Epigynous; (b) Hypogynous
C. (a) Hypogynous; (b) Epigynous
D. (a) Perigynous; (b) Epigynous

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Q114 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Identify the type of flowers based on the position of calyx, corolla and androecium with respect to the ovary from the given figures (a) and (b)

↻ Repeated question — also appeared in 2024 (5 sets)

A. (1) (a) Perigynous; (b) Perigynous
B. (2) (a) Epigynous; (b) Hypogynous
C. (3) (a) Hypogynous; (b) Epigynous
D. (4) (a) Perigynous; (b) Epigynous

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Q115 BIOLOGY Unit 1: Diversity in Living World

Match List I with List II List I | List II --- | --- A. Rhizopus | I. Mushroom B. Ustilago | II. Smut fungus C. Puccinia | III. Bread mould D. Agaricus | IV. Rust fungus Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. A-IV, B-III, C-II, D-I
B. A-III, B-II, C-IV, D-I
C. A-I, B-III, C-II, D-IV
D. A-III, B-II, C-I, D-IV

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Q115 BIOLOGY Unit 1: Diversity in Living World

↻ Repeated question — also appeared in 2024 (4 sets)

A. (1) A-IV, B-III, C-II, D-I
B. (2) A-III, B-II, C-IV, D-I
C. (3) A-I, B-III, C-II, D-IV
D. (4) A-III, B-II, C-I, D-IV

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Q116 BIOLOGY Unit 10: Ecology and Environment

The type of conservation in which the threatened species are taken out from their natural habitat and placed in special setting where they can be protected and given special care is called:

↻ Repeated question — also appeared in 2024 (2 sets)

A. (1) Sustainable development
B. (2) in-situ conservation
C. (3) Biodiversity conservation
D. (4) Semi-conservative method

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Q117 BIOLOGY Unit 3: Cell Structure and Function

Match List I with List II List I | List II A. Nucleolus | I. Site of formation of glycolipid B. Centriole | II. Organization like the cartwheel C. Leucoplasts | III. Site for active ribosomal RNA synthesis D. Golgi apparatus | IV. For storing nutrients Choose the correct answer from the options given below:

A. (1) A-I, B-II, C-III, D-IV
B. (2) A-III, B-II, C-IV, D-I
C. (3) A-II, B-III, C-I, D-IV
D. (4) A-III, B-IV, C-II, D-I

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Q118 BIOLOGY Unit 9: Biotechnology and Its Applications

The capacity to generate a whole plant from any cell of the plant is called:

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A. (1) Somatic hybridization
B. (2) Totipotency
C. (3) Micropropagation
D. (4) Differentiation

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Q119 BIOLOGY Unit 4: Plant Physiology

Formation of interfascicular cambium from fully developed parenchyma cells is an example for:

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A. (1) Maturation
B. (2) Differentiation
C. (3) Redifferentiation
D. (4) Dedifferentiation

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Q120 BIOLOGY Unit 7: Genetics and Evolution

Which one of the following can be explained on the basis of Mendel's Law of Dominance? A. Out of one pair of factors one is dominant and the other is recessive. B. Alleles do not show any expression and both the characters appear as such in F$_2$ generation. C. Factors occur in pairs in normal diploid plants. D. The discrete unit controlling a particular character is called factor. E. The expression of only one of the parental characters is found in a monohybrid cross. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. (1) A, B, C, D and E
B. (2) A, B and C only
C. (3) A, C, D and E only
D. (4) B, C and D only

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Q120 BIOLOGY Unit 7: Genetics and Evolution

Which one of the following can be explained on the basis of Mendel's Law of Dominance? A. Out of one pair of factors one is dominant and the other is recessive. B. Alleles do not show any expression and both the characters appear as such in $F_2$ generation. C. Factors occur in pairs in normal diploid plants. D. The discrete unit controlling a particular character is called factor. E. The expression of only one of the parental characters is found in a monohybrid cross. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. A, B, C, D and E
B. A, B and C only
C. A, C, D and E only
D. B, C and D only

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Q121 BIOLOGY Unit 9: Biotechnology and Its Applications

What is the fate of a piece of DNA carrying only gene of interest which is transferred into an alien organism? A. The piece of DNA would be able to multiply itself independently in the progeny cells of the organism. B. It may get integrated into the genome of the recipient. C. It may multiply and be inherited along with the host DNA. D. The alien piece of DNA is not an integral part of chromosome. E. It shows ability to replicate. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (3 sets)

A. A and E only
B. A and B only
C. D and E only
D. B and C only

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Q122 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Identify the part of the seed from the given figure which is destined to form root when the seed germinates.

↻ Repeated question — also appeared in 2024 (3 sets)

A. D
B. A
C. B
D. C

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Q123 BIOLOGY Unit 7: Genetics and Evolution

Match List I with List II List I A. Two or more alternative forms of a gene B. Cross of $F_1$ progeny with homozygous recessive parent C. Cross of $F_1$ progeny with any of the parents D. Number of chromosome sets in plant List II I. Back cross II. Ploidy III. Allele IV. Test cross Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (3 sets)

A. A-IV, B-III, C-II, D-I
B. A-I, B-II, C-III, D-IV
C. A-II, B-I, C-III, D-IV
D. A-III, B-IV, C-I, D-II

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Q124 BIOLOGY Unit 6: Reproduction

Identify the set of correct statements: A. The flowers of Vallisneria are colourful and produce nectar. B. The flowers of waterlily are not pollinated by water. C. In most of water-pollinated species, the pollen grains are protected from wetting. D. Pollen grains of some hydrophytes are long and ribbon like. E. In some hydrophytes, the pollen grains are carried passively inside water. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (1 set)

A. B, C, D and E only
B. C, D and E only
C. A, B, C and D only
D. A, C, D and E only

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Q124 BIOLOGY Unit 4: Plant Physiology

Identify the set of correct statements: A. The flowers of Vallisneria are colourful and produce nectar. B. The flowers of waterlily are not pollinated by water. C. In most of water-pollinated species, the pollen grains are protected from wetting. D. Pollen grains of some hydrophytes are long and ribbon like. E. In some hydrophytes, the pollen grains are carried passively inside water. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (1 set)

A. B, C, D and E only
B. C, D and E only
C. A, B, C and D only
D. A, C, D and E only

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Q125 BIOLOGY Unit 3: Cell Structure and Function

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

↻ Repeated question — also appeared in 2024 (2 sets)

A. Enzyme activation
B. Cofactor inhibition
C. Feedback inhibition
D. Competitive inhibition

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Q125 BIOLOGY Unit 3: Cell Structure and Function

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

↻ Repeated question — also appeared in 2024 (2 sets)

A. Enzyme activation
B. Cofactor inhibition
C. Feedback inhibition
D. Competitive inhibition

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Q126 BIOLOGY Unit 10: Ecology and Environment

List of endangered species was released by-

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A. IUCN
B. GEAC
C. WWF
D. FOAM

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Q126 BIOLOGY Unit 10: Ecology and Environment

List of endangered species was released by-

↻ Repeated question — also appeared in 2024 (4 sets)

A. IUCN
B. GEAC
C. WWF
D. FOAM

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Q127 BIOLOGY Unit 9: Biotechnology and Its Applications

Given below are two statements: Statement I: Bt toxins are insect group specific and coded by a gene cryIAc. Statement II: Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic pH of the insect gut. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (5 sets)

A. Statement I is false but Statement II is true
B. Both Statement I and Statement II are true
C. Both Statement I and Statement II are false
D. Statement I is true but Statement II is false

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Q127 BIOLOGY Unit 9: Biotechnology and Its Applications

Given below are two statements: Statement I : Bt toxins are insect group specific and coded by a gene cry IAc. Statement II : Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic pH of the insect gut. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (5 sets)

A. Statement I is false but Statement II is true
B. Both Statement I and Statement II are true
C. Both Statement I and Statement II are false
D. Statement I is true but Statement II is false

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Q128 BIOLOGY Unit 3: Cell Structure and Function

Lecithin, a small molecular weight organic compound found in living tissues, is an example of:

↻ Repeated question — also appeared in 2024 (1 set)

A. Carbohydrates
B. Amino acids
C. Phospholipids
D. Glycerides

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Q129 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Which of the following is an example of actinomorphic flower?

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A. Sesbania
B. Datura
C. Cassia
D. Pisum

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Q130 BIOLOGY Unit 10: Ecology and Environment

Tropical regions show greatest level of species richness because A. Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification. B. Tropical environments are more seasonal. C. More solar energy is available in tropics. D. Constant environments promote niche specialization. E. Tropical environments are constant and predictable. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (3 sets)

A. A, B and D only
B. A, C, D and E only
C. A and B only
D. A, B and E only

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Q131 BIOLOGY Unit 9: Biotechnology and Its Applications

Hind II always cuts DNA molecules at a particular point called recognition sequence and it consists of:

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A. 10 bp
B. 8 bp
C. 6 bp
D. 4 bp

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Q131 BIOLOGY Unit 9: Biotechnology and Its Applications

Hind II always cuts DNA molecules at a particular point called recognition sequence and it consists of:

↻ Repeated question — also appeared in 2024 (4 sets)

A. 10 bp
B. 8 bp
C. 6 bp
D. 4 bp

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Q132 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Bulliform cells are responsible for

↻ Repeated question — also appeared in 2024 (5 sets)

A. Providing large spaces for storage of sugars.
B. Inward curling of leaves in monocots.
C. Protecting the plant from salt stress.
D. Increased photosynthesis in monocots.

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Q132 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Bulliform cells are responsible for:

↻ Repeated question — also appeared in 2024 (5 sets)

A. Providing large spaces for storage of sugars.
B. Inward curling of leaves in monocots.
C. Protecting the plant from salt stress.
D. Increased photosynthesis in monocots.

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Q133 BIOLOGY Unit 7: Genetics and Evolution

A transcription unit in DNA is defined primarily by the three regions in DNA and these are with respect to upstream and down stream end;

↻ Repeated question — also appeared in 2024 (4 sets)

A. Promotor, Structural gene, Terminator
B. Repressor, Operator gene, Structural gene
C. Structural gene, Transposons, Operator gene
D. Inducer, Repressor, Structural gene

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Q133 BIOLOGY Unit 7: Genetics and Evolution

A transcription unit in DNA is defined primarily by the three regions in DNA and these are with respect to upstream and down stream end;

↻ Repeated question — also appeared in 2024 (4 sets)

A. Promotor, Structural gene, Terminator
B. Repressor, Operator gene, Structural gene
C. Structural gene, Transposons, Operator gene
D. Inducer, Repressor, Structural gene

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Q134 BIOLOGY Unit 1: Diversity in Living World

Which one of the following is not a criterion for classification of fungi?

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A. Fruiting body
B. Morphology of mycelium
C. Mode of nutrition
D. Mode of spore formation

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Q134 BIOLOGY Unit 1: Diversity in Living World

Which one of the following is not a criterion for classification of fungi?

↻ Repeated question — also appeared in 2024 (5 sets)

A. Fruiting body
B. Morphology of mycelium
C. Mode of nutrition
D. Mode of spore formation

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Q135 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

In the given figure, which component has thin outer walls and highly thickened inner walls?

↻ Repeated question — also appeared in 2024 (4 sets)

A. B
B. C
C. D
D. A

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Q135 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

In the given figure, which component has thin outer walls and highly thickened inner walls?

↻ Repeated question — also appeared in 2024 (4 sets)

A. B
B. C
C. D
D. A

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Q136 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

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A. A-III, B-I, C-IV, D-II
B. A-IV, B-II, C-I, D-III
C. A-IV, B-I, C-II, D-III
D. A-I, B-II, C-IV, D-III

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Q137 BIOLOGY Unit 3: Cell Structure and Function

The DNA present in chloroplast is:

↻ Repeated question — also appeared in 2024 (3 sets)

A. Circular, single stranded
B. Linear, double stranded
C. Circular, double stranded
D. Linear, single stranded

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Q139 BIOLOGY Unit 4: Plant Physiology

Match List I with List II List I | List II A. Citric acid cycle | I. Cytoplasm B. Glycolysis | II. Mitochondrial matrix C. Electron transport system | III. Intermembrane space of mitochondria D. Proton gradient | IV. Inner mitochondrial membrane Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (3 sets)

A. A-IV, B-III, C-II, D-I
B. A-I, B-II, C-III, D-IV
C. A-II, B-I, C-IV, D-III
D. A-III, B-IV, C-I, D-II

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Q140 BIOLOGY Unit 4: Plant Physiology

Given below are two statements: Statement I : In $C_3$ plants, some $O_2$ binds to RuBisCO, hence $CO_2$ fixation is decreased. Statement II: In $C_4$ plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration. In the light of the above statements, choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (4 sets)

A. Statement I is false but Statement II is true
B. Both Statement I and Statement II are true
C. Both Statement I and Statement II are false
D. Statement I is true but Statement II is false

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Q141 BIOLOGY Unit 7: Genetics and Evolution

Which of the following statement is correct regarding the process of replication in E.coli?

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A. The DNA dependent DNA polymerase catalyses polymerization in 5' $\rightarrow$ 3' direction.
B. The DNA dependent DNA polymerase catalyses polymerization in one direction that is 3' $\rightarrow$ 5'.
C. The DNA dependent RNA polymerase catalyses polymerization in one direction, that is 5' $\rightarrow$ 3'.
D. The DNA dependent DNA polymerase catalyses polymerization in 5' $\rightarrow$ 3' as well as 3' $\rightarrow$ 5' direction.

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Q142 BIOLOGY Unit 10: Ecology and Environment

Match List I with List II List I (A) Robert May, (B) Alexander von Humboldt, (C) Paul Ehrlich, (D) David Tilman List II (I) Species-Area relationship, (II) Long term ecosystem experiment using out door plots, (III) Global species diversity at about 7 million, (IV) Rivet popper hypothesis Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. A-III, B-IV, C-II, D-I
B. A-II, B-III, C-I, D-IV
C. A-III, B-I, C-IV, D-II
D. A-I, B-III, C-II, D-IV

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Q143 BIOLOGY Unit 7: Genetics and Evolution

Match List I with List II List I (A) Frederick Griffith, (B) Francois Jacob & Jacque Monod, (C) Har Gobind Khorana, (D) Meselson & Stahl List II (I) Genetic code, (II) Semi-conservative mode of DNA replication, (III) Transformation, (IV) Lac operon Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (2 sets)

A. A-IV, B-I, C-II, D-III
B. A-III, B-II, C-I, D-IV
C. A-III, B-IV, C-I, D-II
D. A-II, B-III, C-IV, D-I

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Q143 BIOLOGY Unit 7: Genetics and Evolution

Match List I with List II List I (Scientist) | List II (Concept) A. Frederick Griffith | I. Genetic code B. Francois Jacob & Jacque Monod | II. Semi-conservative mode of DNA replication C. Har Gobind Khorana | III. Transformation D. Meselson & Stahl | IV. Lac operon Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (1 set)

A. A-IV, B-I, C-II, D-III
B. A-III, B-II, C-I, D-IV
C. A-III, B-IV, C-I, D-II
D. A-II, B-III, C-IV, D-I

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Q144 BIOLOGY Unit 10: Ecology and Environment

In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is $100x$ (kcal $m^{-2}$) $yr^{-1}$, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?

↻ Repeated question — also appeared in 2024 (3 sets)

A. 100x / 3x (kcal $m^{-2}$) $yr^{-1}$
B. 1/10 (kcal $m^{-2}$) $yr^{-1}$
C. x (kcal $m^{-2}$) $yr^{-1}$
D. 10x (kcal $m^{-2}$) $yr^{-1}$

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Q145 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

↻ Repeated question — also appeared in 2024 (3 sets)

A. A-II, B-III, C-IV, D-I
B. A-II, B-IV, C-I, D-III
C. A-I, B-II, C-III, D-IV
D. A-IV, B-III, C-II, D-I

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Q146 BIOLOGY Unit 2: Structural Organisation in Animals and Plants

Identify the correct description about the given figure:

↻ Repeated question — also appeared in 2024 (1 set)

A. Compact inflorescence showing complete autogamy.
B. Wind pollinated plant inflorescence showing flowers with well exposed stamens.
C. Water pollinated flowers showing stamens with mucilaginous covering.
D. Cleistogamous flowers showing autogamy.

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Q199 CHEMISTRY Unit 8: Chemical Kinetics

Regarding catalytic cycle of an enzyme action, select the correct sequential steps: A. Substrate enzyme complex formation. B. Free enzyme ready to bind with another substrate. C. Release of products. D. Chemical bonds of the substrate broken. E. Substrate binding to active site. Choose the correct answer from the options given below:

↻ Repeated question — also appeared in 2024 (1 set)

A. E, D, C, B, A
B. E, A, D, C, B
C. A, E, B, D, C
D. B, A, C, D, E

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