Q1
PHYSICS
Unit 5: Rotational Motion
The ratio of radius of gyration of a solid sphere of mass $M$ and radius $R$ about its own axis to the radius of gyration of the thin hollow sphere of same mass and radius about its axis is :
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2023 (6 sets)
- A. 2 : 5
- B. 5 : 2
- C. 3 : 5
- D. 5 : 3
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Q2
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A 12 V, 60 W lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of 220 V. Assuming the transformer to be ideal, what is the current in the primary winding?
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2023 (8 sets)
- A. 3.7 A
- B. 0.37 A
- C. 0.27 A
- D. 2.7 A
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Q2
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A 12 V, 60 W lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of 220 V. Assuming the transformer to be ideal, what is the current in the primary winding?
↻ Repeated question — also appeared in
2023 (8 sets)
- A. 3.7 A
- B. 0.37 A
- C. 0.27 A
- D. 2.7 A
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Q3
PHYSICS
Unit 12: Current Electricity
If the galvanometer G does not show any deflection in the circuit shown, the value of R is given by :
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2023 (4 sets)
- A. 100 Ω
- B. 400 Ω
- C. 200 Ω
- D. 50 Ω
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Q3
PHYSICS
Unit 12: Current Electricity
If the galvanometer G does not show any deflection in the circuit shown, the value of R is given by :
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2023 (4 sets)
- A. 100 Ω
- B. 400 Ω
- C. 200 Ω
- D. 50 Ω
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Q4
PHYSICS
Unit 19: Electronic Devices
A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of these components remove the ac ripple from the rectified output?
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2023 (9 sets)
- A. Capacitor
- B. Load resistance
- C. A centre-tapped transformer
- D. p-n junction diodes
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Q4
PHYSICS
Unit 19: Electronic Devices
A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of these components remove the ac ripple from the rectified output?
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2023 (9 sets)
- A. Capacitor
- B. Load resistance
- C. A centre-tapped transformer
- D. p-n junction diodes
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Q6
PHYSICS
Unit 10: Oscillations and Waves
The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is :
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2023 (8 sets)
- A. 1 : 3
- B. 3 : 1
- C. 1 : 2
- D. 2 : 1
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Q6
PHYSICS
Unit 10: Oscillations and Waves
The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is :
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2023 (8 sets)
- A. 1 : 3
- B. 3 : 1
- C. 1 : 2
- D. 2 : 1
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Q7
PHYSICS
Unit 7: Properties of Solids and Liquids
The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly : (surface tension of soap solution = 0.03 N m$^{-1}$)
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2023 (8 sets)
- A. 3.01×10$^{-4}$ J
- B. 50.1×10$^{-4}$ J
- C. 30.16×10$^{-4}$ J
- D. 5.06×10$^{-4}$ J
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Q8
PHYSICS
Unit 7: Properties of Solids and Liquids
Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $W$ attached at its free end. The longitudinal stress at any point of cross-sectional area $A$ of the wire is :
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2023 (9 sets)
- A. W/2A
- B. Zero
- C. 2W/A
- D. W/A
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Q8
PHYSICS
Unit 7: Properties of Solids and Liquids
Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is :
↻ Repeated question — also appeared in
2023 (9 sets)
- A. W/2A
- B. Zero
- C. 2W/A
- D. W/A
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Q9
PHYSICS
Unit 2: Kinematics
A vehicle travels half the distance with speed $v$ and the remaining distance with speed $2v$. Its average speed is:
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2023 (6 sets)
- A. 4v/3
- B. 3v/4
- C. v/3
- D. 2v/3
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Q9
PHYSICS
Unit 2: Kinematics
A vehicle travels half the distance with speed v and the remaining distance with speed 2v. Its average speed is:
↻ Repeated question — also appeared in
2023 (6 sets)
- A. 4v/3
- B. 3v/4
- C. v/3
- D. 2v/3
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Q12
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
An AC source is connected to a capacitor C. Due to a decrease in its operating frequency:
↻ Repeated question — also appeared in
2023 (6 sets)
- A. displacement current decreases.
- B. capacitive reactance remains constant
- C. capacitive reactance decreases.
- D. displacement current increases.
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Q13
PHYSICS
Unit 11: Electrostatics
The equivalent capacitance of the system shown in the following circuit is :
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2023 (6 sets)
- A. 6 µF
- B. 9 µF
- C. 2 µF
- D. 3 µF
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Q14
PHYSICS
Unit 15: Electromagnetic Waves
In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of $2.0 \times 10^{10} \text{ Hz}$ and amplitude $48 \text{ V m}^{-1}$. Then the amplitude of oscillating magnetic field is : (Speed of light in free space = $3 \times 10^8 \text{ m s}^{-1}$)
↻ Repeated question — also appeared in
2023 (8 sets)
- A. 1.6 × 10⁻⁷ T
- B. 1.6 × 10⁻⁶ T
- C. 1.6 × 10⁻⁹ T
- D. 1.6 × 10⁻⁸ T
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Q15
PHYSICS
Unit 18: Atoms and Nuclei
In hydrogen spectrum, the shortest wavelength in the Balmer series is $\lambda$. The shortest wavelength in the Bracket series is :
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2023 (6 sets)
- A. 9\lambda
- B. 16\lambda
- C. 2\lambda
- D. 4\lambda
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Q16
PHYSICS
Unit 1: Physics and Measurement
A metal wire has mass ($0.4 \pm 0.002$) g, radius ($0.3 \pm 0.001$) mm and length ($5 \pm 0.02$) cm. The maximum possible percentage error in the measurement of density will nearly be:
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2023 (7 sets)
- A. 1.6%
- B. 1.4%
- C. 1.2%
- D. 1.3%
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Q17
PHYSICS
Unit 2: Kinematics
A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts on the player while turning is :
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2023 (4 sets)
- A. along north-east
- B. along south-west
- C. along eastward
- D. along northward
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Q18
PHYSICS
Unit 9: Kinetic Theory of Gases
The temperature of a gas is -50° C. To what temperature the gas should be heated so that the rms speed is increased by 3 times?
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2023 (7 sets)
- A. 3097 K
- B. 223 K
- C. 669° C
- D. 3295° C
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Q19
PHYSICS
Unit 12: Current Electricity
Resistance of a carbon resistor determined from colour codes is (22000 ± 5%) Ω. The colour of third band must be :
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2023 (6 sets)
- A. Orange
- B. Yellow
- C. Red
- D. Green
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Q20
PHYSICS
Unit 2: Kinematics
A bullet is fired from a gun at the speed of 280 m s⁻¹ in the direction 30° above the horizontal. The maximum height attained by the bullet is (g = 9.8 m s⁻², sin 30° = 0.5) :
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2023 (6 sets)
- A. 1000 m
- B. 3000 m
- C. 2800 m
- D. 2000 m
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Q21
PHYSICS
Unit 8: Thermodynamics
A Carnot engine has an efficiency of 50% when its source is at a temperature 327° C. The temperature of the sink is :
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2023 (8 sets)
- A. 100° C
- B. 200° C
- C. 27° C
- D. 15° C
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Q22
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
In a series LCR circuit, the inductance L is 10 mH, capacitance C is 1 µF and resistance R is 100 Ω. The frequency at which resonance occurs is :
↻ Repeated question — also appeared in
2023 (7 sets)
- A. 1.59 rad/s
- B. 1.59 kHz
- C. 15.9 rad/s
- D. 15.9 kHz
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Q23
PHYSICS
Unit 11: Electrostatics
If $\oint_S \vec{E} \cdot d\vec{S} = 0$ over a surface, then :
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2023 (8 sets)
- A. all the charges must necessarily be inside the surface.
- B. the electric field inside the surface is necessarily uniform.
- C. the number of flux lines entering the surface must be equal to the number of flux lines leaving it.
- D. the magnitude of electric field on the surface is constant.
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Q24
PHYSICS
Unit 6: Gravitation
Two bodies of mass m and 9m are placed at a distance R. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be (G = gravitational constant) :
↻ Repeated question — also appeared in
2023 (6 sets)
- A. - 16 Gm / R
- B. - 20 Gm / R
- C. - 8 Gm / R
- D. - 12 Gm / R
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Q25
PHYSICS
Unit 12: Current Electricity
The magnitude and direction of the current in the following circuit is
↻ Repeated question — also appeared in
2023 (4 sets)
- A. 5/9 A from A to B through E
- B. 1.5 A from B to A through E
- C. 0.2 A from B to A through E
- D. 0.5 A from A to B through E
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Q26
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of V volts is proportional to:
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2023 (3 sets)
- A. 1 / \sqrt{V}
- B. V^2
- C. \sqrt{V}
- D. 1 / V
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Q27
PHYSICS
Unit 5: Rotational Motion
The angular acceleration of a body, moving along the circumference of a circle, is :
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2023 (6 sets)
- A. along the tangent to its position
- B. along the axis of rotation
- C. along the radius, away from centre
- D. along the radius towards the centre
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Q28
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
The magnetic energy stored in an inductor of inductance 4 µH carrying a current of 2 A is :
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2023 (1 set)
- A. 8 mJ
- B. 8 µJ
- C. 4 µJ
- D. 4 mJ
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Q29
PHYSICS
Unit 18: Atoms and Nuclei
The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to 1/16 of its initial value?
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2023 (8 sets)
- A. 60 minutes
- B. 80 minutes
- C. 20 minutes
- D. 40 minutes
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Q30
PHYSICS
Unit 4: Work Energy and Power
The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm, potential energy stored in it will be :
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2023 (8 sets)
- A. 8U
- B. 16U
- C. 2U
- D. 4U
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Q31
PHYSICS
Unit 7: Properties of Solids and Liquids
The venturi-meter works on:
↻ Repeated question — also appeared in
2023 (8 sets)
- A. The principle of parallel axes
- B. The principle of perpendicular axes
- C. Huygen's principle
- D. Bernoulli's principle
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Q31
PHYSICS
Unit 7: Properties of Solids and Liquids
The venturi-meter works on:
↻ Repeated question — also appeared in
2023 (8 sets)
- A. The principle of parallel axes
- B. The principle of perpendicular axes
- C. Huygen's principle
- D. Bernoulli's principle
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Q32
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
The net magnetic flux through any closed surface is :
↻ Repeated question — also appeared in
2023 (7 sets)
- A. Infinity
- B. Negative
- C. Zero
- D. Positive
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Q32
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
The net magnetic flux through any closed surface is :
↻ Repeated question — also appeared in
2023 (7 sets)
- A. Infinity
- B. Negative
- C. Zero
- D. Positive
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Q33
PHYSICS
Unit 19: Electronic Devices
Given below are two statements:
Statement I : Photovoltaic devices can convert optical radiation into electricity.
Statement II : Zener diode is designed to operate under reverse bias in breakdown region.
In the light of the above statements, choose the most appropriate answer from the options given below :
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2023 (7 sets)
- A. Statement I is correct but Statement II is incorrect.
- B. Statement I is incorrect but Statement II is correct.
- C. Both Statement I and Statement II are correct.
- D. Both Statement I and Statement II are incorrect.
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Q33
PHYSICS
Unit 19: Electronic Devices
Given below are two statements:
Statement I : Photovoltaic devices can convert optical radiation into electricity.
Statement II : Zener diode is designed to operate under reverse bias in breakdown region.
In the light of the above statements, choose the most appropriate answer from the options given below:
↻ Repeated question — also appeared in
2023 (7 sets)
- A. Statement I is correct but Statement II is incorrect.
- B. Statement I is incorrect but Statement II is correct.
- C. Both Statement I and Statement II are correct.
- D. Both Statement I and Statement II are incorrect.
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Q34
PHYSICS
Unit 1: Physics and Measurement
The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are :
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2023 (5 sets)
- A. Least count errors
- B. Random errors
- C. Instrumental errors
- D. Personal errors
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Q35
PHYSICS
Unit 11: Electrostatics
An electric dipole is placed at an angle of 30° with an electric field of intensity $2 \times 10^5 \text{ N C}^{-1}$. It experiences a torque equal to 4 N m. Calculate the magnitude of charge on the dipole, if the dipole length is 2 cm.
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2023 (8 sets)
- A. 4 mC
- B. 2 mC
- C. 8 mC
- D. 6 mC
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Q36
PHYSICS
Unit 10: Oscillations and Waves
The x-t graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the particle at t = 2 s is :
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2023 (4 sets)
- A. $\frac{\pi^2}{16} \text{ ms}^{-2}$
- B. $-\frac{\pi^2}{16} \text{ ms}^{-2}$
- C. $\frac{\pi^2}{8} \text{ ms}^{-2}$
- D. $-\frac{\pi^2}{8} \text{ ms}^{-2}$
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Q37
PHYSICS
Unit 2: Kinematics
A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity 4 $\text{ms}^{-1}$. The ball strikes the water surface after 4 s. The height of bridge above water surface is (Take $g=10 \text{ms}^{-2}$):
↻ Repeated question — also appeared in
2023 (8 sets)
- A. 64 m
- B. 68 m
- C. 56 m
- D. 60 m
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Q39
PHYSICS
Unit 12: Current Electricity
The resistance of platinum wire at $0^\circ \text{C}$ is $2\Omega$ and $6.8\Omega$ at $80^\circ \text{C}$. The temperature coefficient of resistance of the wire is :
↻ Repeated question — also appeared in
2023 (4 sets)
- A. $3 \times 10^{-2} \text{ }^\circ \text{C}^{-1}$
- B. $3 \times 10^{-1} \text{ }^\circ \text{C}^{-1}$
- C. $3 \times 10^{-4} \text{ }^\circ \text{C}^{-1}$
- D. $3 \times 10^{-3} \text{ }^\circ \text{C}^{-1}$
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Q40
PHYSICS
Unit 18: Atoms and Nuclei
The radius of inner most orbit of hydrogen atom is $5.3 \times 10^{-11} \text{ m}$. What is the radius of third allowed orbit of hydrogen atom?
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2023 (8 sets)
- A. 1.59 $\text{\AA}$
- B. 4.77 $\text{\AA}$
- C. 0.53 $\text{\AA}$
- D. 1.06 $\text{\AA}$
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Q41
PHYSICS
Unit 12: Current Electricity
10 resistors, each of resistance $R$ are connected in series to a battery of emf $E$ and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased $n$ times. The value of $n$ is :
↻ Repeated question — also appeared in
2023 (6 sets)
- A. 1
- B. 1000
- C. 10
- D. 100
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Q45
PHYSICS
Unit 4: Work Energy and Power
A bullet from a gun is fired on a rectangular wooden block with velocity $u$. When the bullet travels 24 cm through the block along its length horizontally, the velocity of the bullet becomes $u/3$. Then it further penetrates into the block in the same direction before coming to rest exactly at the other end of the block. The total length of the block is:
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2023 (3 sets)
- A. 28 cm
- B. 30 cm
- C. 27 cm
- D. 24 cm
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Q46
PHYSICS
Unit 16: Optics
In the figure shown here, what is the equivalent focal length of the combination of lenses (Assume that all layers are thin)? ($n_1 = 1.5, n_2 = 1.6, R_1 = R_2 = 20$ cm)
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2023 (4 sets)
- A. -100 cm
- B. -50 cm
- C. 40 cm
- D. -40 cm
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Q48
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A very long conducting wire is bent in a semi-circular shape from A to B as shown in figure. The magnetic field at point P for steady current configuration is given by:
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2023 (2 sets)
- A. $\frac{\mu_0 i}{4R} [1 - 2/\pi]$ pointed away from page
- B. $\frac{\mu_0 i}{4R} [1 - 2/\pi]$ pointed into the page
- C. $\frac{\mu_0 i}{4R}$ pointed into the page
- D. $\frac{\mu_0 i}{4R}$ pointed away from the page
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Q49
PHYSICS
Unit 3: Laws of Motion
Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is 0.15 ($g = 10$ m s$^{-2}$).
↻ Repeated question — also appeared in
2023 (6 sets)
- A. 1.5 m s$^{-2}$
- B. 50 m s$^{-2}$
- C. 1.2 m s$^{-2}$
- D. 150 m s$^{-2}$
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Q51
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Amongst the following, the total number of species NOT having eight electrons around central atom in its outer most shell, is NH$_3$, AlCl$_3$, BeCl$_2$, CCl$_4$, PCl$_5$:
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2023 (7 sets)
- A. 4
- B. 1
- C. 3
- D. 2
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Q52
CHEMISTRY
Unit 19: Biomolecules
Some tranquilizers are listed below. Which one from the following belongs to barbiturates?
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2023 (3 sets)
- A. Valium
- B. Veronal
- C. Chlordiazepoxide
- D. Meprobamate
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Q53
CHEMISTRY
Unit 8: Chemical Kinetics
Given below are two statements: Assertion A: A reaction can have zero activation energy. Reason R: The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy. In the light of the above statements, choose the correct answer:
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2023 (6 sets)
- A. A is true but R is false.
- B. A is false but R is true.
- C. Both A and R are true and R is the correct explanation of A.
- D. Both A and R are true and R is NOT the correct explanation of A.
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Q55
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
The number of $\sigma$ bonds, $\pi$ bonds and lone pair of electrons in pyridine, respectively are:
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2023 (2 sets)
- A. 11, 3, 1
- B. 12, 2, 1
- C. 11, 2, 0
- D. 12, 3, 0
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Q56
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
The right option for the mass of CO$_2$ produced by heating 20 g of 20% pure limestone is (Atomic mass of Ca = 40) [CaCO$_3$ $\xrightarrow{1200 K}$ CaO + CO$_2$]:
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2023 (7 sets)
- A. 2.64 g
- B. 1.32 g
- C. 1.12 g
- D. 1.76 g
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Q57
CHEMISTRY
Unit 8: Chemical Kinetics
Which one is an example of heterogenous catalysis?
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2023 (7 sets)
- A. Decomposition of ozone in presence of nitrogen monoxide.
- B. Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron.
- C. Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen.
- D. Hydrolysis of sugar catalysed by H+ ions.
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Q58
CHEMISTRY
Unit 10: p-Block Elements
Assertion A: Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic. Reasons R: The deep blue solution is due to the formation of amide. In the light of the above statements, choose the correct answer:
- A. A is true but R is false.
- B. A is false but R is true.
- C. Both A and R are true and R is the correct explanation of A.
- D. Both A and R are true but R is NOT the correct explanation of A.
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Q59
BIOLOGY
Unit 5: Human Physiology
Which one of the following statements is correct?
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2023 (4 sets)
- A. The bone in human body is an inert and unchanging substance.
- B. Mg plays roles in neuromuscular function and interneuronal transmission.
- C. The daily requirement of Mg and Ca in the human body is estimated to be 0.2 - 0.3 g.
- D. All enzymes that utilise ATP in phosphate transfer require Ca as the cofactor.
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Q60
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
Identify the product in the following reaction:
$$\text{Benzenediazonium chloride} \xrightarrow[(ii) \text{Mg/dry ether}]{(i) \text{Cu}_2\text{Br}_2/\text{HBr}} \xrightarrow{(iii) \text{H}_2\text{O}} \text{Product}$$
- A. Bromobenzene
- B. Phenol
- C. Benzene
- D. Phenyl magnesium bromide
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Q61
CHEMISTRY
Unit 8: Chemical Kinetics
For a certain reaction, the rate = k [A]$^2$ [B], when the initial concentration of A is tripled keeping concentration of B constant, the initial rate would
↻ Repeated question — also appeared in
2023 (7 sets)
- A. increase by a factor of nine.
- B. increase by a factor of three.
- C. decrease by a factor of nine.
- D. increase by a factor of six.
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Q62
CHEMISTRY
Unit 10: p-Block Elements
Which of the following statements are NOT correct?
A. Hydrogen is used to reduce heavy metal oxides to metals.
B. Heavy water is used to study reaction mechanism.
C. Hydrogen is used to make saturated fats from oils.
D. The H-H bond dissociation enthalpy is lowest as compared to a single bond between two atoms of any element.
E. Hydrogen reduces oxides of metals that are more active than iron.
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2023 (2 sets)
- A. D, E only
- B. A, B, C only
- C. B, C, D, E only
- D. B, D only
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Q63
CHEMISTRY
Unit 12: Coordination Compounds
Homoleptic complex from the following complexes is :
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2023 (5 sets)
- A. Pentaamminecarbonatocobalt (III) chloride
- B. Triamminetriaquachromium (III) chloride
- C. Potassium trioxalatoaluminate (III)
- D. Diamminechloridonitrito - N - platinum (II)
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Q64
CHEMISTRY
Unit 20: Principles Related to Practical Chemistry
In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with Fe$^{3+}$ due to the formation of -
- A. [Fe(CN)$_5$NOS]$^{4-}$
- B. [Fe(SCN)]$^{2+}$
- C. Fe$_4$[Fe(CN)$_6$]$_3$ · xH$_2$O
- D. NaSCN
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Q65
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: In equation $\Delta_r G = -nFE_{cell}$, the value of $\Delta_r G$ depends on n.
Reason R: $E_{cell}$ is an intensive property and $\Delta_r G$ is an extensive property.
- A. A is true but R is false.
- B. A is false but R is true.
- C. Both A and R are true and R is the correct explanation of A.
- D. Both A and R are true and R is NOT the correct explanation of A.
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Q66
CHEMISTRY
Unit 15: Hydrocarbons
Identify product (A) in the following reaction:
$$(\text{Substrate}) \xrightarrow[\text{conc. HCl}]{\text{Zn-Hg}} (A) + 2H_2O$$
- A. Option 1 (with CH2OH)
- B. Option 2 (with methyl groups)
- C. Option 3 (alkyl chain)
- D. Option 4 (with alcohol)
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Q67
CHEMISTRY
Unit 2: Atomic Structure
The relation between $n_m$, ($n_m$ = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is
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2023 (6 sets)
- A. $n_m = 2l^2 + 1$
- B. $n_m = l + 2$
- C. $l = \frac{n_m - 1}{2}$
- D. $l = 2n_m + 1$
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Q68
CHEMISTRY
Unit 11: d- and f-Block Elements
The stability of Cu$^{2+}$ is more than Cu$^+$ salts in aqueous solution due to -
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2023 (8 sets)
- A. hydration energy.
- B. second ionisation enthalpy.
- C. first ionisation enthalpy.
- D. enthalpy of atomization.
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Q69
CHEMISTRY
Unit 15: Hydrocarbons
Match List - I with List -II:
- A. A-III, B-I, C-IV, D-II
- B. A-III, B-IV, C-I, D-II
- C. A-II, B-IV, C-I, D-III
- D. A-IV, B-I, C-II, D-III
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Q70
CHEMISTRY
Unit 15: Hydrocarbons
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is:
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2023 (6 sets)
- A. 30
- B. 18
- C. 16
- D. 32
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Q70
CHEMISTRY
Unit 15: Hydrocarbons
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :
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2023 (6 sets)
- A. 30
- B. 18
- C. 16
- D. 32
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Q71
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Complete the following reaction: Cyclohexanone -> [A] -> [B] -> [C]. [C] is ___
- A. Option 1 (Alpha,beta-unsaturated aldehyde)
- B. Option 2 (Cyclohexene carboxylic acid derivative)
- C. Option 3 (Cyclohexanol)
- D. Option 4 (Cyclohexane carboxylic acid)
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Q72
CHEMISTRY
Unit 19: Biomolecules
Given below are two statements:
Statement I: A unit formed by the attachment of a base to 1' position of sugar is known as nucleoside
Statement II: When nucleoside is linked to phosphorous acid at 5'-position of sugar moiety, we get nucleotide.
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2023 (2 sets)
- A. Statement I is true but Statement II is false.
- B. Statement I is false but Statement II is true.
- C. Both Statement I and Statement II are true.
- D. Both Statement I and Statement II are false.
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Q73
PHYSICS
Unit 9: Kinetic Theory of Gases
Which amongst the following options is correct graphical representation of Boyle's Law?
- A. Option 1 (P vs 1/V plot, isotherms)
- B. Option 2 (P vs T plot)
- C. Option 3 (P vs V plot, isotherms)
- D. Option 4 (P vs 1/V plot, slope variation)
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Q74
PHYSICS
Unit 7: Properties of Solids and Liquids
A compound is formed by two elements A and B. The element B forms cubic close packed structure and atoms of A occupy 1/3 of tetrahedral voids. If the formula of the compound is $A_xB_y$, then the value of $x + y$ is:
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2023 (4 sets)
- A. 3
- B. 2
- C. 5
- D. 4
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Q78
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The conductivity of centimolar solution of KCl at 25°C is 0.0210 $\text{ohm}^{-1} \text{cm}^{-1}$ and the resistance of the cell containing the solution at 25°C is 60 ohm. The value of cell constant is:
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2023 (3 sets)
- A. 1.26 $\text{cm}^{-1}$
- B. 3.34 $\text{cm}^{-1}$
- C. 1.34 $\text{cm}^{-1}$
- D. 3.28 $\text{cm}^{-1}$
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Q80
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
The element expected to form largest ion to achieve the nearest noble gas configuration is :
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2023 (5 sets)
- A. N
- B. Na
- C. O
- D. F
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Q83
CHEMISTRY
Unit 2: Atomic Structure
Select the correct statements from the following :
A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is $9.10939 \times 10^{-31}$ kg.
C. All the isotopes of a given element show same chemical properties.
D. Protons and electrons are collectively known as nucleons.
E. Dalton's atomic theory, regarded the atom as an ultimate particle of matter.
Choose the correct answer from the options given below :
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2023 (3 sets)
- A. A and E only
- B. B, C and E only
- C. A, B and C only
- D. C, D and E only
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Q84
CHEMISTRY
Unit 5: Solutions
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Helium is used to dilute oxygen in diving apparatus. Reason R: Helium has high solubility in $O_2$. In the light of the above statements, choose the correct answer from the options given below:
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2023 (3 sets)
- A. A is true but R is false.
- B. A is false but R is true.
- C. Both A and R are true and R is the correct explanation of A.
- D. Both A and R are true and R is NOT the correct explanation of A.
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Q84
CHEMISTRY
Unit 10: p-Block Elements
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : Helium is used to dilute oxygen in diving apparatus.
Reasons R : Helium has high solubility in $O_2$.
In the light of the above statements, choose the correct answer from the options given below:
↻ Repeated question — also appeared in
2023 (2 sets)
- A. A is true but R is false.
- B. A is false but R is true.
- C. Both A and R are true and R is the correct explanation of A.
- D. Both A and R are true and R is NOT the correct explanation of A.
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Q85
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Amongst the given options which of the following molecules / ion acts as a Lewis acid?
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2023 (2 sets)
- A. $BF_3$
- B. $OH^-$
- C. $NH_3$
- D. $H_2O$
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Q90
CHEMISTRY
Unit 5: Solutions
Pumice stone is an example of -
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2023 (7 sets)
- A. solid sol
- B. foam
- C. sol
- D. gel
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Q91
CHEMISTRY
Unit 4: Chemical Thermodynamics
Which amongst the following options is the correct relation between change in enthalpy and change in internal energy?
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2023 (6 sets)
- A. $\Delta H - \Delta U = -\Delta n_g RT$
- B. $\Delta H + \Delta U = \Delta n_g R$
- C. $\Delta H = \Delta U - \Delta n_g RT$
- D. $\Delta H = \Delta U + \Delta n_g RT$
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Q95
PHYSICS
Unit 7: Properties of Solids and Liquids
What fraction of one edge centred octahedral void lies in one unit cell of fcc?
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2023 (7 sets)
- A. 1/4
- B. 1/12
- C. 1/2
- D. 1/3
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Q98
BIOLOGY
Unit 10: Ecology and Environment
Given below are two statements :
Statement I : The nutrient deficient water bodies lead to eutrophication.
Statement II : Eutrophication leads to decrease in the level of oxygen in the water bodies.
In the light of the above statements, choose the correct answer from the options given below:
↻ Repeated question — also appeared in
2023 (8 sets)
- A. Statement I is correct but Statement II is false.
- B. Statement I is incorrect but Statement II is true.
- C. Both Statement I and Statement II are true.
- D. Both Statement I and Statement II are false.
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Q101
BIOLOGY
Unit 3: Cell Structure and Function
What is the role of RNA polymerase III in the process of transcription in Eukaryotes?
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2023 (6 sets)
- A. Transcription of precursor of mRNA
- B. Transcription of only snRNAs
- C. Transcription of rRNAs (28S, 18S and 5.8S)
- D. Transcription of tRNA, 5S rRNA and snRNA
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Q102
BIOLOGY
Unit 1: Diversity in Living World
Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.
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2023 (5 sets)
- A. Monoadelphous and Monothecous anthers
- B. Epiphyllous and Dithecous anthers
- C. Diadelphous and Dithecous anthers
- D. Polyadelphous and epipetalous stamens
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Q103
BIOLOGY
Unit 10: Ecology and Environment
In the equation $GPP - R = NPP$, GPP is Gross Primary Productivity, NPP is Net Primary Productivity. R here is:
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2023 (8 sets)
- A. Respiratory loss
- B. Reproductive allocation
- C. Photosynthetically active radiation
- D. Respiratory quotient
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Q104
BIOLOGY
Unit 4: Plant Physiology
Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
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2023 (8 sets)
- A. Zeatin
- B. Abscisic Acid
- C. Indole-3-butyric Acid
- D. Gibberellic Acid
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Q105
BIOLOGY
Unit 1: Diversity in Living World
Axile placentation is observed in:
- A. Tomato, Dianthus and Pea
- B. China rose, Petunia and Lemon
- C. Mustard, Cucumber and Primrose
- D. China rose, Beans and Lupin
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Q106
BIOLOGY
Unit 3: Cell Structure and Function
Among eukaryotes, replication of DNA takes place in:
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- A. G1 phase
- B. G2 phase
- C. M phase
- D. S phase
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Q107
BIOLOGY
Unit 4: Plant Physiology
How many ATP and NADPH2 are required for the synthesis of one molecule of Glucose during Calvin cycle?
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2023 (8 sets)
- A. 12 ATP and 16 NADPH2
- B. 18 ATP and 16 NADPH2
- C. 12 ATP and 12 NADPH2
- D. 18 ATP and 12 NADPH2
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Q108
BIOLOGY
Unit 1: Diversity in Living World
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason R : Protonema develops directly from spores produced in capsule.
In the light of the above statements, choose the most appropriate answer from the options given below:
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2023 (6 sets)
- A. A is correct but R is not correct.
- B. A is not correct but R is correct.
- C. Both A and R are correct and R is the correct explanation of A.
- D. Both A and R are correct but R is NOT the correct explanation of A.
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Q109
BIOLOGY
Unit 4: Plant Physiology
Movement and accumulation of ions across a membrane against their concentration gradient can be explained by:
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- A. Passive Transport
- B. Active Transport
- C. Osmosis
- D. Facilitated Diffusion
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Q110
BIOLOGY
Unit 7: Genetics and Evolution
Unequivocal proof that DNA is the genetic material was first proposed by:
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- A. Avery, Macleoid and McCarthy
- B. Wilkins and Franklin
- C. Frederick Griffith
- D. Alfred Hershey and Martha Chase
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Q111
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following stages of meiosis involves division of centromere?
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- A. Anaphase II
- B. Telophase
- C. Metaphase I
- D. Metaphase II
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Q112
BIOLOGY
Unit 4: Plant Physiology
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : ATP is used at two steps in glycolysis.
Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1-6-diphosphate.
In the light of the above statements, choose the correct answer from the options given below:
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2023 (6 sets)
- A. A is true but R is false.
- B. A is false but R is true.
- C. Both A and R are true and R is the correct explanation of A.
- D. Both A and R are true but R is NOT the correct explanation of A.
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Q113
BIOLOGY
Unit 1: Diversity in Living World
Large, colourful, fragrant flowers with nectar are seen in:
- A. bat pollinated plants
- B. wind pollinated plants
- C. insect pollinated plants
- D. bird pollinated plants
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Q114
BIOLOGY
Unit 10: Ecology and Environment
The historic Convention on Biological Diversity, 'The Earth Summit' was held in Rio de Janeiro in the year:
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- A. 1986
- B. 2002
- C. 1985
- D. 1992
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Q115
BIOLOGY
Unit 10: Ecology and Environment
The thickness of ozone in a column of air in the atmosphere is measured in terms of:
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2023 (8 sets)
- A. Decameter
- B. Kilo base
- C. Dobson units
- D. Decibels
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