Q1
PHYSICS
Unit 15: Electromagnetic Waves
An EM wave is propagating in a medium with a velocity V = V i. The instantaneous oscillating electric field of this EM wave is along +y axis. Then the direction of oscillating magnetic field of the EM wave will be along
↻ Repeated question — also appeared in
2018 (15 sets)
- A. – z direction
- B. + z direction
- C. – y direction
- D. – x direction
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Q2
PHYSICS
Unit 16: Optics
The refractive index of the material of a prism is sqrt(2) and the angle of the prism is 30°. One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 60°
- B. 45°
- C. 30°
- D. zero
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Q3
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance
↻ Repeated question — also appeared in
2018 (11 sets)
- A. 0.138 H
- B. 138.88 H
- C. 1.389 H
- D. 13.89 H
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Q4
PHYSICS
Unit 16: Optics
An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 30 cm away from the mirror
- B. 36 cm away from the mirror
- C. 30 cm towards the mirror
- D. 36 cm towards the mirror
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Q6
PHYSICS
Unit 19: Electronic Devices
In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0 and VCE = 0. The values of IB, IC and beta are given by
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2018 (9 sets)
- A. IB = 40 μA, IC = 10 mA, beta = 250
- B. IB = 25 μA, IC = 5 mA, beta = 200
- C. IB = 20 μA, IC = 5 mA, beta = 250
- D. IB = 40 μA, IC = 5 mA, beta = 125
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Q6
PHYSICS
Unit 19: Electronic Devices
In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0 and VCE = 0. The values of IB, IC and β are given by:
↻ Repeated question — also appeared in
2018 (9 sets)
- A. IB = 40 μA, IC = 10 mA, β = 250
- B. IB = 25 μA, IC = 5 mA, β = 200
- C. IB = 20 μA, IC = 5 mA, β = 250
- D. IB = 40 μA, IC = 5 mA, β = 125
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Q7
PHYSICS
Unit 19: Electronic Devices
In a p-n junction diode, change in temperature due to heating
↻ Repeated question — also appeared in
2018 (16 sets)
- A. affects only reverse resistance
- B. affects only forward resistance
- C. does not affect resistance of p-n junction
- D. affects the overall V – I characteristics of p-n junction
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Q7
PHYSICS
Unit 19: Electronic Devices
In a p-n junction diode, change in temperature due to heating
↻ Repeated question — also appeared in
2018 (16 sets)
- A. affects only reverse resistance
- B. affects only forward resistance
- C. does not affect resistance of p-n junction
- D. affects the overall V – I characteristics of p-n junction
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Q8
PHYSICS
Unit 7: Properties of Solids and Liquids
A small sphere of radius ‘r’ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to
↻ Repeated question — also appeared in
2018 (16 sets)
- A. r^3
- B. r^2
- C. r^5
- D. r^4
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Q8
PHYSICS
Unit 7: Properties of Solids and Liquids
A small sphere of radius ‘r’ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to
↻ Repeated question — also appeared in
2018 (16 sets)
- A. r^3
- B. r^2
- C. r^5
- D. r^4
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Q9
PHYSICS
Unit 8: Thermodynamics
A sample of 0.1 g of water at 100°C and normal pressure (1.013 x 10^5 Nm^-2) requires 54 cal of heat energy to convert to steam at 100°C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 104.3 J
- B. 208.7 J
- C. 42.2 J
- D. 84.5 J
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Q10
PHYSICS
Unit 7: Properties of Solids and Liquids
Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Δl on applying a force F, how much force is needed to stretch the second wire by the same amount?
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2018 (14 sets)
- A. 9 F
- B. 6 F
- C. 4 F
- D. F
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Q11
PHYSICS
Unit 8: Thermodynamics
The power radiated by a black body is P and it radiates maximum energy at wavelength λ0. If the temperature of the black body is now changed so that it radiates maximum energy at wavelength 4/3 λ0, the power radiated by it becomes nP. The value of n is
↻ Repeated question — also appeared in
2018 (12 sets)
- A. 4/3
- B. 3/4
- C. 81/256
- D. 256/81
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Q12
PHYSICS
Unit 12: Current Electricity
A set of ‘n’ equal resistors, of value ‘R’ each, are connected in series to a battery of emf ‘E’ and internal resistance ‘R’. The current drawn is I. Now, the ‘n’ resistors are connected in parallel to the same battery. Then the current drawn from battery becomes 10 I. The value of ‘n’ is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 10
- B. 11
- C. 20
- D. 9
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Q14
PHYSICS
Unit 12: Current Electricity
A carbon resistor of (47 ± 4.7) kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Violet – Yellow – Orange – Silver
- B. Yellow – Violet – Orange – Silver
- C. Yellow – Green – Violet – Gold
- D. Green – Orange – Violet – Gold
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Q15
PHYSICS
Unit 3: Laws of Motion
Which one of the following statements is incorrect?
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2018 (14 sets)
- A. Rolling friction is smaller than sliding friction.
- B. Limiting value of static friction is directly proportional to normal reaction.
- C. Frictional force opposes the relative motion.
- D. Coefficient of sliding friction has dimensions of length.
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Q16
PHYSICS
Unit 4: Work Energy and Power
A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be
↻ Repeated question — also appeared in
2018 (5 sets)
- A. 0.5
- B. 0.25
- C. 0.8
- D. 0.4
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Q18
PHYSICS
Unit 5: Rotational Motion
Three objects, A: (a solid sphere), B: (a thin circular disk) and C: (a circular ring), each have the same mass M and radius R. They all spin with the same angular speed ω about their own symmetry axes. The amounts of work (W) required to bring them to rest, would satisfy the relation
↻ Repeated question — also appeared in
2018 (15 sets)
- A. WC > WB > WA
- B. WA > WB > WC
- C. WB > WA > WC
- D. WA > WC > WB
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Q19
PHYSICS
Unit 10: Oscillations and Waves
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27°C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27°C is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 330 m/s
- B. 339 m/s
- C. 350 m/s
- D. 300 m/s
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Q19
PHYSICS
Unit 10: Oscillations and Waves
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 °C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27 °C is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 330 m/s
- B. 339 m/s
- C. 350 m/s
- D. 300 m/s
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Q20
PHYSICS
Unit 11: Electrostatics
An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it through the same vertical distance h. The time of fall of the electron, in comparison to the time of fall of the proton is
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2018 (14 sets)
- A. smaller
- B. 5 times greater
- C. 10 times greater
- D. equal
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Q21
PHYSICS
Unit 10: Oscillations and Waves
A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m/s² at a distance of 5 m from the mean position. The time period of oscillation is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 2π s
- B. π s
- C. 2 s
- D. 1 s
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Q22
PHYSICS
Unit 11: Electrostatics
The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. independent of the distance between the plates.
- B. linearly proportional to the distance between the plates.
- C. proportional to the square root of the distance between the plates.
- D. inversely proportional to the distance between the plates.
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Q23
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electron of mass m with an initial velocity V = V₀i (V₀ > 0) enters an electric field E = -E₀i (E₀ = constant > 0) at t = 0. If λ₀ is its de-Broglie wavelength initially, then its de-Broglie wavelength at time t is
↻ Repeated question — also appeared in
2018 (11 sets)
- A. (λ₀) / (1 + (eE₀t / mV₀))
- B. λ₀(1 + (eE₀t / mV₀))
- C. λ₀t
- D. λ₀
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Q24
PHYSICS
Unit 18: Atoms and Nuclei
For a radioactive material, half-life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 20
- B. 10
- C. 30
- D. 15
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Q25
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
When the light of frequency 2v₀ (where v₀ is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is v₁. When the frequency of the incident radiation is increased to 5v₀, the maximum velocity of electrons emitted from the same plate is v₂. The ratio of v₁ to v₂ is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 1 : 2
- B. 1 : 4
- C. 4 : 1
- D. 2 : 1
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Q26
PHYSICS
Unit 18: Atoms and Nuclei
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 1 : 1
- B. 1 : – 1
- C. 2 : – 1
- D. 1 : – 2
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Q27
PHYSICS
Unit 5: Rotational Motion
The moment of the force F = 4i + 5j - 6k at (2, 0, -3), about the point (2, -2, -2), is given by
↻ Repeated question — also appeared in
2018 (13 sets)
- A. – 8i – 4j – 7k
- B. – 4i – j – 8k
- C. – 7i – 8j – 4k
- D. – 7i – 4j – 8k
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Q29
PHYSICS
Unit 2: Kinematics
A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric field E. Due to the force qE, its velocity increases from 0 to 6 m/s in one second duration. At that instant the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively
↻ Repeated question — also appeared in
2018 (13 sets)
- A. 2 m/s, 4 m/s
- B. 1 m/s, 3 m/s
- C. 1 m/s, 3·5 m/s
- D. 1·5 m/s, 3 m/s
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Q30
PHYSICS
Unit 20: Experimental Skills
A student measured the diameter of a small steel ball using a screw gauge of least count 0·001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of – 0·004 cm, the correct diameter of the ball is
↻ Repeated question — also appeared in
2018 (9 sets)
- A. 0·521 cm
- B. 0·525 cm
- C. 0·053 cm
- D. 0·529 cm
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Q30
PHYSICS
Unit 20: Experimental Skills
A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of – 0.004 cm, the correct diameter of the ball is
↻ Repeated question — also appeared in
2018 (9 sets)
- A. 0.521 cm
- B. 0.525 cm
- C. 0.053 cm
- D. 0.529 cm
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Q31
PHYSICS
Unit 16: Optics
Unpolarised light is incident from air on a plane surface of a material of refractive index ‘μ’. At a particular angle of incidence ‘i’, it is found that the reflected and refracted rays are perpendicular to each other. Which of the following options is correct for this situation?
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2018 (15 sets)
- A. Reflected light is polarised with its electric vector parallel to the plane of incidence
- B. Reflected light is polarised with its electric vector perpendicular to the plane of incidence
- C. i = sin⁻¹(1/μ)
- D. i = tan⁻¹(1/μ)
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Q32
PHYSICS
Unit 16: Optics
In Young’s double slit experiment the separation d between the slits is 2 mm, the wavelength λ of the light used is 5896 Å and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is 0.20°. To increase the fringe angular width to 0.21° (with same λ and D) the separation between the slits needs to be changed to
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 1.8 mm
- B. 1.9 mm
- C. 2.1 mm
- D. 1.7 mm
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Q33
PHYSICS
Unit 16: Optics
An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens of
↻ Repeated question — also appeared in
2018 (15 sets)
- A. small focal length and large diameter
- B. large focal length and small diameter
- C. large focal length and large diameter
- D. small focal length and small diameter
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Q35
PHYSICS
Unit 10: Oscillations and Waves
The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 13.2 cm
- B. 8 cm
- C. 12.5 cm
- D. 16 cm
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Q36
PHYSICS
Unit 8: Thermodynamics
The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 26.8%
- B. 20%
- C. 6.25%
- D. 12.5%
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Q37
PHYSICS
Unit 9: Kinetic Theory of Gases
At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphere? (Given: Mass of oxygen molecule (m) = 2.76 × 10⁻²⁶ kg, Boltzmann’s constant kB = 1.38 × 10⁻²³ J K⁻¹)
↻ Repeated question — also appeared in
2018 (13 sets)
- A. 2.508 × 10⁴ K
- B. 8.360 × 10⁴ K
- C. 5.016 × 10⁴ K
- D. 1.254 × 10⁴ K
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Q38
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A metallic rod of mass per unit length 0.5 kg m⁻¹ is lying horizontally on a smooth inclined plane which makes an angle of 30° with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0.25 T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 7.14 A
- B. 5.98 A
- C. 14.76 A
- D. 11.32 A
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Q39
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
An inductor 20 mH, a capacitor 100 μF and a resistor 50 Ω are connected in series across a source of emf, V = 10 sin 314 t. The power loss in the circuit is
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 0.79 W
- B. 0.43 W
- C. 2.74 W
- D. 1.13 W
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Q41
PHYSICS
Unit 12: Current Electricity
Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is
↻ Repeated question — also appeared in
2018 (11 sets)
- A. 40 Ω
- B. 25 Ω
- C. 250 Ω
- D. 500 Ω
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Q41
PHYSICS
Unit 12: Current Electricity
Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is
↻ Repeated question — also appeared in
2018 (11 sets)
- A. 40 Ω
- B. 25 Ω
- C. 250 Ω
- D. 500 Ω
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Q42
PHYSICS
Unit 6: Gravitation
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct?
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2018 (13 sets)
- A. Raindrops will fall faster.
- B. Walking on the ground would become more difficult.
- C. Time period of a simple pendulum on the Earth would decrease.
- D. ‘g’ on the Earth will not change.
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Q43
PHYSICS
Unit 5: Rotational Motion
A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy (Kt) as well as rotational kinetic energy (Kr) simultaneously. The ratio Kt : (Kt + Kr) for the sphere is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 7 : 10
- B. 5 : 7
- C. 10 : 7
- D. 2 : 5
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Q45
PHYSICS
Unit 5: Rotational Motion
A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping its mass same. Which of the following physical quantities would remain constant for the sphere?
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2018 (15 sets)
- A. Angular velocity
- B. Moment of inertia
- C. Rotational kinetic energy
- D. Angular momentum
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Q47
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Nitration of aniline in strong acidic medium also gives m-nitroaniline because
↻ Repeated question — also appeared in
2018 (12 sets)
- A. In spite of substituents nitro group always goes to only m-position.
- B. In electrophilic substitution reactions amino group is meta directive.
- C. In absence of substituents nitro group always goes to m-position.
- D. In acidic (strong) medium aniline is present as anilinium ion.
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Q48
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
Which of the following oxides is most acidic in nature?
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2018 (8 sets)
- A. MgO
- B. BeO
- C. BaO
- D. CaO
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Q49
CHEMISTRY
Unit 19: Biomolecules
The difference between amylose and amylopectin is
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Amylopectin have 1 → 4 α-linkage and 1 → 6 α-linkage
- B. Amylose have 1 → 4 α-linkage and 1 → 6 β-linkage
- C. Amylopectin have 1 → 4 α-linkage and 1 → 6 β-linkage
- D. Amylose is made up of glucose and galactose
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Q50
CHEMISTRY
Unit 19: Biomolecules
Regarding cross-linked or network polymers, which of the following statements is incorrect?
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2018 (5 sets)
- A. They contain covalent bonds between various linear polymer chains.
- B. They are formed from bi- and tri-functional monomers.
- C. Examples are bakelite and melamine.
- D. They contain strong covalent bonds in their polymer chains.
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Q52
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
↻ Repeated question — also appeared in
2018 (13 sets)
- A. formation of intramolecular H-bonding
- B. formation of carboxylate ion
- C. more extensive association of carboxylic acid via van der Waals force of attraction
- D. formation of intermolecular H-bonding
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Q54
CHEMISTRY
Unit 8: Chemical Kinetics
The correct difference between first- and second-order reactions is that
↻ Repeated question — also appeared in
2018 (16 sets)
- A. the rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations
- B. the half-life of a first-order reaction does not depend on [A]0; the half-life of a second-order reaction does depend on [A]0
- C. a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed
- D. the rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations
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Q54
CHEMISTRY
Unit 8: Chemical Kinetics
The correct difference between first- and second-order reactions is that
↻ Repeated question — also appeared in
2018 (16 sets)
- A. the rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations
- B. the half-life of a first-order reaction does not depend on [A]0; the half-life of a second-order reaction does depend on [A]0
- C. a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed
- D. the rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations
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Q55
CHEMISTRY
Unit 10: p-Block Elements
Among CaH2, BeH2, BaH2, the order of ionic character is
↻ Repeated question — also appeared in
2018 (4 sets)
- A. BeH2 < CaH2 < BaH2
- B. CaH2 < BeH2 < BaH2
- C. BeH2 < BaH2 < CaH2
- D. BaH2 < BeH2 < CaH2
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Q55
CHEMISTRY
Unit 10: p-Block Elements
Among CaH2, BeH2, BaH2, the order of ionic character is
↻ Repeated question — also appeared in
2018 (4 sets)
- A. BeH2 < CaH2 < BaH2
- B. CaH2 < BeH2 < BaH2
- C. BeH2 < BaH2 < CaH2
- D. BaH2 < BeH2 < CaH2
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Q57
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
In which case is the number of molecules of water maximum?
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2018 (15 sets)
- A. 18 mL of water
- B. 0.18 g of water
- C. 0.00224 L of water vapours at 1 atm and 273 K
- D. 10^-3 mol of water
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Q58
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Mg2X3
- B. MgX2
- C. Mg2X
- D. Mg3X2
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Q59
PHYSICS
Unit 20: Experimental Skills
Iron exhibits bcc structure at room temperature. Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic radii of iron remains constant with temperature) is
- A. 2/3
- B. 23/34
- C. 24/33
- D. 2/1
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Q60
CHEMISTRY
Unit 2: Atomic Structure
Which one is a wrong statement?
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2018 (10 sets)
- A. Total orbital angular momentum of electron in ‘s’ orbital is equal to zero.
- B. An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers.
- C. The electronic configuration of N atom is
- D. The value of m for 2d z2 is zero.
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Q61
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Consider the following species : CN+, CN–, NO and CN. Which one of these will have the highest bond order?
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2018 (13 sets)
- A. NO
- B. CN–
- C. CN+
- D. CN
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Q62
CHEMISTRY
Unit 10: p-Block Elements
Which of the following statements is not true for halogens?
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2018 (15 sets)
- A. All form monobasic oxyacids.
- B. All are oxidizing agents.
- C. All but fluorine show positive oxidation states.
- D. Chlorine has the highest electron-gain enthalpy.
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Q63
CHEMISTRY
Unit 10: p-Block Elements
Which one of the following elements is unable to form [MF6]3- ion?
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2018 (14 sets)
- A. Ga
- B. Al
- C. B
- D. In
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Q64
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
In the structure of ClF3, the number of lone pairs of electrons on central atom ‘Cl’ is
↻ Repeated question — also appeared in
2018 (13 sets)
- A. one
- B. two
- C. four
- D. three
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Q65
CHEMISTRY
Unit 11: d- and f-Block Elements
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
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2018 (9 sets)
- A. Fe
- B. Zn
- C. Mg
- D. Cu
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Q66
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
The correct order of atomic radii in group 13 elements is
↻ Repeated question — also appeared in
2018 (12 sets)
- A. B < Al < In < Ga < Tl
- B. B < Al < Ga < In < Tl
- C. B < Ga < Al < Tl < In
- D. B < Ga < Al < In < Tl
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Q67
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The correct order of N-compounds in its decreasing order of oxidation states is
↻ Repeated question — also appeared in
2018 (5 sets)
- A. HNO3, NO, N2, NH4Cl
- B. HNO3, NO, NH4Cl, N2
- C. HNO3, NH4Cl, NO, N2
- D. NH4Cl, N2, NO, HNO3
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Q68
CHEMISTRY
Unit 5: Solutions
On which of the following properties does the coagulating power of an ion depend?
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2018 (5 sets)
- A. The magnitude of the charge on the ion alone
- B. Size of the ion alone
- C. Both magnitude and sign of the charge on the ion
- D. The sign of charge on the ion alone
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Q69
CHEMISTRY
Unit 6: Equilibrium
Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations: a. 60 mL 10^-3 M HCl + 40 mL 10^-3 M NaOH, b. 55 mL 10^-3 M HCl + 45 mL 10^-3 M NaOH, c. 75 mL 5*10^-3 M HCl + 25 mL 5*10^-3 M NaOH, d. 100 mL 10^-3 M HCl + 100 mL 10^-3 M NaOH. pH of which one of them will be equal to 1?
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2018 (11 sets)
- A. b
- B. a
- C. d
- D. c
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Q69
CHEMISTRY
Unit 6: Equilibrium
Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations: a. 60 mL 10^-1 M HCl + 40 mL 10^-1 M NaOH b. 55 mL 10^-1 M HCl + 45 mL 10^-1 M NaOH c. 75 mL 5*10^-2 M HCl + 25 mL 5*10^-2 M HCl d. 100 mL 10^-1 M HCl + 100 mL 10^-1 M NaOH. pH of which one of them will be equal to 1?
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2018 (11 sets)
- A. b
- B. a
- C. d
- D. c
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Q70
CHEMISTRY
Unit 6: Equilibrium
The solubility of BaSO4 in water is 2.42 * 10^-3 g L^-1 at 298 K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO4 = 233 g mol^-1)
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 1.08 * 10^-10 mol2 L^-2
- B. 1.08 * 10^-12 mol2 L^-2
- C. 1.08 * 10^-14 mol2 L^-2
- D. 1.08 * 10^-8 mol2 L^-2
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Q70
CHEMISTRY
Unit 6: Equilibrium
The solubility of BaSO4 in water is 2.42 * 10^-3 gL^-1 at 298 K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO4 = 233 g mol^-1)
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 1.08 * 10^-10 mol^2 L^-2
- B. 1.08 * 10^-12 mol^2 L^-2
- C. 1.08 * 10^-14 mol^2 L^-2
- D. 1.08 * 10^-8 mol^2 L^-2
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Q71
PHYSICS
Unit 9: Kinetic Theory of Gases
Given van der Waals constant for NH3, H2, O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?
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2018 (10 sets)
- A. NH3
- B. H2
- C. O2
- D. CO2
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Q71
PHYSICS
Unit 9: Kinetic Theory of Gases
Given van der Waals constant for NH3, H2, O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?
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2018 (10 sets)
- A. NH3
- B. H2
- C. O2
- D. CO2
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Q72
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B and C are in the order
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2018 (13 sets)
- A. C2H5OH, C2H6, C2H5Cl
- B. C2H5OH, C2H5Cl, C2H5ONa
- C. C2H5Cl, C2H6, C2H5OH
- D. C2H5OH, C2H5ONa, C2H5Cl
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Q73
CHEMISTRY
Unit 15: Hydrocarbons
Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. CH ≡ CH
- B. CH2 = CH2
- C. CH3 – CH3
- D. CH4
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Q75
BIOLOGY
Unit 10: Ecology and Environment
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?
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2018 (6 sets)
- A. N2O5
- B. NO2
- C. N2O
- D. NO
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Q77
CHEMISTRY
Unit 6: Equilibrium
Which one of the following conditions will favour maximum formation of the product in the reaction, A2(g) + B2(g) <=> X2(g) ΔrH = - X kJ ?
↻ Repeated question — also appeared in
2018 (12 sets)
- A. Low temperature and high pressure
- B. Low temperature and low pressure
- C. High temperature and high pressure
- D. High temperature and low pressure
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Q78
PHYSICS
Unit 9: Kinetic Theory of Gases
The correction factor ‘a’ to the ideal gas equation corresponds to
↻ Repeated question — also appeared in
2018 (10 sets)
- A. density of the gas molecules
- B. volume of the gas molecules
- C. electric field present between the gas molecules
- D. forces of attraction between the gas molecules
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Q79
CHEMISTRY
Unit 8: Chemical Kinetics
When initial concentration of the reactant is doubled, the half-life period of a zero order reaction
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2018 (15 sets)
- A. is halved
- B. is doubled
- C. is tripled
- D. remains unchanged
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Q80
CHEMISTRY
Unit 4: Chemical Thermodynamics
The bond dissociation energies of X2, Y2 and XY are in the ratio of 1 : 0.5 : 1. ΔH for the formation of XY is – 200 kJ mol^-1. The bond dissociation energy of X2 will be
↻ Repeated question — also appeared in
2018 (12 sets)
- A. 200 kJ mol^-1
- B. 100 kJ mol^-1
- C. 800 kJ mol^-1
- D. 400 kJ mol^-1
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Q82
CHEMISTRY
Unit 19: Biomolecules
Which of the following compounds can form a zwitterion?
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2018 (9 sets)
- A. Aniline
- B. Acetanilide
- C. Benzoic acid
- D. Glycine
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Q83
CHEMISTRY
Unit 12: Coordination Compounds
The type of isomerism shown by the complex [CoCl2(en)2] is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Geometrical isomerism
- B. Coordination isomerism
- C. Ionization isomerism
- D. Linkage isomerism
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Q84
CHEMISTRY
Unit 11: d- and f-Block Elements
Which one of the following ions exhibits d-d transition and paramagnetism as well?
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2018 (8 sets)
- A. CrO4^-2
- B. Cr2O7^-2
- C. MnO4^-
- D. MnO4^-2
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Q85
CHEMISTRY
Unit 12: Coordination Compounds
The geometry and magnetic behaviour of the complex [Ni(CO)4] are
↻ Repeated question — also appeared in
2018 (15 sets)
- A. square planar geometry and diamagnetic
- B. tetrahedral geometry and diamagnetic
- C. square planar geometry and paramagnetic
- D. tetrahedral geometry and paramagnetic
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Q86
CHEMISTRY
Unit 12: Coordination Compounds
Iron carbonyl, Fe(CO)5 is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. tetranuclear
- B. mononuclear
- C. trinuclear
- D. dinuclear
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Q86
CHEMISTRY
Unit 12: Coordination Compounds
Iron carbonyl, Fe(CO)5 is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. tetranuclear
- B. mononuclear
- C. trinuclear
- D. dinuclear
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Q87
CHEMISTRY
Unit 12: Coordination Compounds
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code:
Column I: a. Co3+, b. Cr3+, c. Fe3+, d. Ni2+
Column II: i. 8 B.M., ii. 35 B.M., iii. 3 B.M., iv. 24 B.M., v. 15 B.M.
↻ Repeated question — also appeared in
2018 (7 sets)
- A. (1) iv v ii i
- B. (2) i ii iii iv
- C. (3) iv i ii iii
- D. (4) iii v i ii
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Q88
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following is correct with respect to – I effect of the substituents ? (R = alkyl)
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2018 (14 sets)
- A. – NH2 < – OR < – F
- B. – NR2 < – OR < – F
- C. – NH2 > – OR > – F
- D. – NR2 > – OR > – F
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Q88
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following is correct with respect to –I effect of the substituents? (R = alkyl)
↻ Repeated question — also appeared in
2018 (14 sets)
- A. – NH2 < – OR < – F
- B. – NR2 < – OR < – F
- C. – NH2 > – OR > – F
- D. – NR2 > – OR > – F
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Q90
CHEMISTRY
Unit 15: Hydrocarbons
Which of the following molecules represents the order of hybridisation sp2, sp2, sp, sp from left to right atoms?
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2018 (2 sets)
- A. HC ≡ C – C ≡ CH
- B. CH2 = CH – C ≡ CH
- C. CH2 = CH – CH = CH2
- D. CH3 – CH = CH – CH3
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Q90
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following molecules represents the order of hybridisation sp2, sp2, sp, sp from left to right atoms?
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2018 (11 sets)
- A. HC ≡ C – C ≡ CH
- B. CH2 = CH – C ≡ CH
- C. CH2 = CH – CH = CH2
- D. CH3 – CH = CH – CH3
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Q91
BIOLOGY
Unit 7: Genetics and Evolution
The experimental proof for semiconservative replication of DNA was first shown in a
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Fungus
- B. Bacterium
- C. Plant
- D. Virus
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Q92
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct statement:
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Franklin Stahl coined the term ‘‘linkage’’.
- B. Punnett square was developed by a British scientist.
- C. Spliceosomes take part in translation.
- D. Transduction was discovered by S. Altman.
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Q93
BIOLOGY
Unit 6: Reproduction
Offsets are produced by
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Meiotic divisions
- B. Mitotic divisions
- C. Parthenocarpy
- D. Parthenogenesis
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Q94
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following pairs is wrongly matched?
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2018 (15 sets)
- A. Starch synthesis in pea : Multiple alleles
- B. ABO blood grouping : Co-dominance
- C. XO type sex determination : Grasshopper
- D. T.H. Morgan : Linkage
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Q95
BIOLOGY
Unit 6: Reproduction
Which of the following flowers only once in its life-time?
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2018 (15 sets)
- A. Bamboo species
- B. Jackfruit
- C. Mango
- D. Papaya
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Q96
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct match:
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Alec Jeffreys – Streptococcus pneumoniae
- B. Alfred Hershey and Martha Chase – TMV
- C. Matthew Meselson and F. Stahl – Pisum sativum
- D. Francois Jacob and Jacques Monod – Lac operon
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Q97
BIOLOGY
Unit 4: Plant Physiology
Which of the following has proved helpful in preserving pollen as fossils?
- A. Pollenkitt
- B. Cellulosic intine
- C. Oil content
- D. Sporopollenin
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Q98
BIOLOGY
Unit 4: Plant Physiology
Stomatal movement is not affected by
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Temperature
- B. Light
- C. O2 concentration
- D. CO2 concentration
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Q99
BIOLOGY
Unit 3: Cell Structure and Function
The stage during which separation of the paired homologous chromosomes begins is
↻ Repeated question — also appeared in
2018 (8 sets)
- A. Pachytene
- B. Diplotene
- C. Diakinesis
- D. Zygotene
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Q100
CHEMISTRY
Unit 19: Biomolecules
The two functional groups characteristic of sugars are
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2018 (7 sets)
- A. hydroxyl and methyl
- B. carbonyl and methyl
- C. carbonyl and phosphate
- D. carbonyl and hydroxyl
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Q101
BIOLOGY
Unit 4: Plant Physiology
Which of the following is not a product of light reaction of photosynthesis?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. ATP
- B. NADH
- C. NADPH
- D. Oxygen
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Q102
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Stomata in grass leaf are
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2018 (10 sets)
- A. Dumb-bell shaped
- B. Kidney shaped
- C. Rectangular
- D. Barrel shaped
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Q103
BIOLOGY
Unit 1: Diversity in Living World
Which among the following is not a prokaryote?
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2018 (14 sets)
- A. Saccharomyces
- B. Mycobacterium
- C. Nostoc
- D. Oscillatoria
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Q104
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is true for nucleolus?
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2018 (15 sets)
- A. Larger nucleoli are present in dividing cells.
- B. It is a membrane-bound structure.
- C. It takes part in spindle formation.
- D. It is a site for active ribosomal RNA synthesis.
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Q105
BIOLOGY
Unit 3: Cell Structure and Function
The Golgi complex participates in
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Fatty acid breakdown
- B. Formation of secretory vesicles
- C. Respiration in bacteria
- D. Activation of amino acid
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Q106
BIOLOGY
Unit 10: Ecology and Environment
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Carbon
- B. Cl
- C. Fe
- D. Oxygen
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Q107
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is a secondary pollutant?
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2018 (15 sets)
- A. CO
- B. CO2
- C. SO2
- D. O3
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Q108
BIOLOGY
Unit 10: Ecology and Environment
Niche is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. all the biological factors in the organism’s environment
- B. the physical space where an organism lives
- C. the range of temperature that the organism needs to live
- D. the functional role played by the organism where it lives
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Q108
BIOLOGY
Unit 10: Ecology and Environment
Niche is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. all the biological factors in the organism’s environment
- B. the physical space where an organism lives
- C. the range of temperature that the organism needs to live
- D. the functional role played by the organism where it lives
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Q109
BIOLOGY
Unit 10: Ecology and Environment
Natality refers to
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Death rate
- B. Birth rate
- C. Number of individuals leaving the habitat
- D. Number of individuals entering a habitat
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Q109
BIOLOGY
Unit 10: Ecology and Environment
Natality refers to
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Death rate
- B. Birth rate
- C. Number of individuals leaving the habitat
- D. Number of individuals entering a habitat
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Q110
BIOLOGY
Unit 10: Ecology and Environment
What type of ecological pyramid would be obtained with the following data? Secondary consumer: 120 g, Primary consumer: 60 g, Primary producer: 10 g
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Inverted pyramid of biomass
- B. Pyramid of energy
- C. Upright pyramid of numbers
- D. Upright pyramid of biomass
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Q110
BIOLOGY
Unit 10: Ecology and Environment
What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 g, Primary consumer : 60 g, Primary producer : 10 g
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Inverted pyramid of biomass
- B. Pyramid of energy
- C. Upright pyramid of numbers
- D. Upright pyramid of biomass
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Q111
BIOLOGY
Unit 10: Ecology and Environment
World Ozone Day is celebrated on
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 5th June
- B. 21st April
- C. 16th September
- D. 22nd April
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Q111
BIOLOGY
Unit 10: Ecology and Environment
World Ozone Day is celebrated on
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 5th June
- B. 21st April
- C. 16th September
- D. 22nd April
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Q112
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Retrovirus
- B. Ti plasmid
- C. phage
- D. pBR 322
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Q112
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Retrovirus
- B. Ti plasmid
- C. λ phage
- D. pBR 322
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Q113
BIOLOGY
Unit 9: Biotechnology and Its Applications
In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Indian Council of Medical Research (ICMR)
- B. Council for Scientific and Industrial Research (CSIR)
- C. Research Committee on Genetic Manipulation (RCGM)
- D. Genetic Engineering Appraisal Committee (GEAC)
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Q114
BIOLOGY
Unit 9: Biotechnology and Its Applications
A ‘new’ variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Co-667
- B. Sharbati Sonora
- C. Lerma Rojo
- D. Basmati
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Q115
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct match :
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Ribozyme – Nucleic acid
- B. F2 × Recessive parent – Dihybrid cross
- C. T.H. Morgan – Transduction
- D. G. Mendel – Transformation
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Q116
BIOLOGY
Unit 9: Biotechnology and Its Applications
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Bio-infringement
- B. Biopiracy
- C. Biodegradation
- D. Bioexploitation
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Q117
BIOLOGY
Unit 9: Biotechnology and Its Applications
The correct order of steps in Polymerase Chain Reaction (PCR) is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Extension, Denaturation, Annealing
- B. Annealing, Extension, Denaturation
- C. Denaturation, Extension, Annealing
- D. Denaturation, Annealing, Extension
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Q118
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Secondary xylem and phloem in dicot stem are produced by
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Apical meristems
- B. Vascular cambium
- C. Phellogen
- D. Axillary meristems
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Q119
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Pneumatophores occur in
↻ Repeated question — also appeared in
2018 (9 sets)
- A. Halophytes
- B. Free-floating hydrophytes
- C. Carnivorous plants
- D. Submerged hydrophytes
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Q120
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Sweet potato is a modified
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Stem
- B. Adventitious root
- C. Tap root
- D. Rhizome
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Q121
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements is correct?
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2018 (15 sets)
- A. Ovules are not enclosed by ovary wall in gymnosperms.
- B. Selaginella is heterosporous, while Salvinia is homosporous.
- C. Horsetails are gymnosperms.
- D. Stems are usually unbranched in both Cycas and Cedrus.
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Q122
BIOLOGY
Unit 1: Diversity in Living World
Select the wrong statement:
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2018 (13 sets)
- A. Cell wall is present in members of Fungi and Plantae.
- B. Mushrooms belong to Basidiomycetes.
- C. Pseudopodia are locomotory and feeding structures in Sporozoans.
- D. Mitochondria are the powerhouse of the cell in all kingdoms except Monera.
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Q123
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Casparian strips occur in
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Epidermis
- B. Pericycle
- C. Cortex
- D. Endodermis
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Q124
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Plants having little or no secondary growth are
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2018 (14 sets)
- A. Grasses
- B. Deciduous angiosperms
- C. Conifers
- D. Cycads
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Q125
BIOLOGY
Unit 1: Diversity in Living World
Which one is wrongly matched?
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2018 (15 sets)
- A. Uniflagellate gametes – Polysiphonia
- B. Biflagellate zoospores – Brown algae
- C. Gemma cups – Marchantia
- D. Unicellular organism – Chlorella
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Q126
BIOLOGY
Unit 1: Diversity in Living World
Match the items given in Column I with those in Column II and select the correct option given below:
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2018 (4 sets)
- A. Herbarium - i. It is a place having a collection of preserved plants and animals. b. Key - ii. A list that enumerates methodically all the species found in an area with brief description aiding identification. c. Museum - iii. Is a place where dried and pressed plant specimens mounted on sheets are kept. d. Catalogue - iv. A booklet containing a list of characters and their alternates which are helpful in identification of various taxa.
- B. i iv iii ii
- C. iii ii i iv
- D. ii iv iii i
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Q127
BIOLOGY
Unit 1: Diversity in Living World
Winged pollen grains are present in
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2018 (7 sets)
- A. Mustard
- B. Cycas
- C. Mango
- D. Pinus
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Q127
BIOLOGY
Unit 6: Reproduction
Winged pollen grains are present in
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2018 (11 sets)
- A. Mustard
- B. Cycas
- C. Mango
- D. Pinus
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Q128
BIOLOGY
Unit 1: Diversity in Living World
After karyogamy followed by meiosis, spores are produced exogenously in
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Neurospora
- B. Alternaria
- C. Agaricus
- D. Saccharomyces
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Q128
BIOLOGY
Unit 1: Diversity in Living World
After karyogamy followed by meiosis, spores are produced exogenously in
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Neurospora
- B. Alternaria
- C. Agaricus
- D. Saccharomyces
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Q129
BIOLOGY
Unit 4: Plant Physiology
What is the role of NAD+ in cellular respiration?
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2018 (14 sets)
- A. It functions as an enzyme.
- B. It functions as an electron carrier.
- C. It is a nucleotide source for ATP synthesis.
- D. It is the final electron acceptor for anaerobic respiration.
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Q129
BIOLOGY
Unit 4: Plant Physiology
What is the role of NAD+ in cellular respiration?
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2018 (14 sets)
- A. It functions as an enzyme.
- B. It functions as an electron carrier.
- C. It is a nucleotide source for ATP synthesis.
- D. It is the final electron acceptor for anaerobic respiration.
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Q130
BIOLOGY
Unit 4: Plant Physiology
Oxygen is not produced during photosynthesis by
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2018 (16 sets)
- A. Green sulphur bacteria
- B. Nostoc
- C. Cycas
- D. Chara
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Q130
BIOLOGY
Unit 4: Plant Physiology
Oxygen is not produced during photosynthesis by
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2018 (16 sets)
- A. Green sulphur bacteria
- B. Nostoc
- C. Cycas
- D. Chara
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Q131
BIOLOGY
Unit 6: Reproduction
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
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2018 (15 sets)
- A. – 120°C
- B. – 80°C
- C. – 196°C
- D. – 160°C
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Q132
BIOLOGY
Unit 4: Plant Physiology
In which of the following forms is iron absorbed by plants?
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2018 (15 sets)
- A. Ferric
- B. Ferrous
- C. Free element
- D. Both ferric and ferrous
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Q133
BIOLOGY
Unit 6: Reproduction
Double fertilization is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Fusion of two male gametes of a pollen tube with two different eggs
- B. Fusion of one male gamete with two polar nuclei
- C. Fusion of two male gametes with one egg
- D. Syngamy and triple fusion
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Q134
BIOLOGY
Unit 4: Plant Physiology
Which of the following elements is responsible for maintaining turgor in cells?
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2018 (15 sets)
- A. Magnesium
- B. Sodium
- C. Potassium
- D. Calcium
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Q135
BIOLOGY
Unit 6: Reproduction
Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
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2018 (10 sets)
- A. Hydrilla
- B. Yucca
- C. Banana
- D. Viola
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Q136
BIOLOGY
Unit 5: Human Physiology
Hormones secreted by the placenta to maintain pregnancy are
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2018 (1 set)
- A. hCG, hPL, progestogens, prolactin
- B. hCG, hPL, estrogens, relaxin, oxytocin
- C. hCG, hPL, progestogens, estrogens
- D. hCG, progestogens, estrogens, glucocorticoids
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Q137
BIOLOGY
Unit 6: Reproduction
The contraceptive ‘SAHELI’
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2018 (12 sets)
- A. blocks estrogen receptors in the uterus, preventing eggs from getting implanted.
- B. increases the concentration of estrogen and prevents ovulation in females.
- C. is an IUD.
- D. is a post-coital contraceptive.
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Q138
BIOLOGY
Unit 6: Reproduction
The difference between spermiogenesis and spermiation is
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2018 (14 sets)
- A. In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.
- B. In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.
- C. In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.
- D. In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.
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Q139
BIOLOGY
Unit 6: Reproduction
The amnion of mammalian embryo is derived from
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2018 (14 sets)
- A. ectoderm and mesoderm
- B. endoderm and mesoderm
- C. mesoderm and trophoblast
- D. ectoderm and endoderm
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Q140
BIOLOGY
Unit 10: Ecology and Environment
In a growing population of a country,
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2018 (15 sets)
- A. pre-reproductive individuals are more than the reproductive individuals.
- B. reproductive individuals are less than the post-reproductive individuals.
- C. reproductive and pre-reproductive individuals are equal in number.
- D. pre-reproductive individuals are less than the reproductive individuals.
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Q141
BIOLOGY
Unit 10: Ecology and Environment
All of the following are included in ‘Ex-situ conservation’ except
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2018 (15 sets)
- A. Wildlife safari parks
- B. Sacred groves
- C. Botanical gardens
- D. Seed banks
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Q142
BIOLOGY
Unit 8: Biology and Human Welfare
Which part of poppy plant is used to obtain the drug “Smack”?
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2018 (13 sets)
- A. Flowers
- B. Latex
- C. Roots
- D. Leaves
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Q143
BIOLOGY
Unit 10: Ecology and Environment
Match the items given in Column I with those in Column II and select the correct option given below:
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2018 (1 set)
- A. Eutrophication - Nutrient enrichment
- B. Sanitary landfill - Waste disposal
- C. Snow blindness - UV-B radiation
- D. Jhum cultivation - Deforestation
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Q143
BIOLOGY
Unit 10: Ecology and Environment
Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Eutrophication, b. Sanitary landfill, c. Snow blindness, d. Jhum cultivation
Column II: i. UV-B radiation, ii. Deforestation, iii. Nutrient enrichment, iv. Waste disposal
↻ Repeated question — also appeared in
2018 (11 sets)
- A. (1) ii i iii iv
- B. (2) i iii iv ii
- C. (3) iii iv i ii
- D. (4) i ii iv iii
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Q144
BIOLOGY
Unit 10: Ecology and Environment
Which one of the following population interactions is widely used in medical science for the production of antibiotics?
↻ Repeated question — also appeared in
2018 (13 sets)
- A. (1) Commensalism
- B. (2) Mutualism
- C. (3) Parasitism
- D. (4) Amensalism
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Q144
BIOLOGY
Unit 10: Ecology and Environment
Which one of the following population interactions is widely used in medical science for the production of antibiotics?
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Commensalism
- B. Mutualism
- C. Parasitism
- D. Amensalism
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Q145
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following events does not occur in rough endoplasmic reticulum?
↻ Repeated question — also appeared in
2018 (14 sets)
- A. (1) Protein folding
- B. (2) Protein glycosylation
- C. (3) Cleavage of signal peptide
- D. (4) Phospholipid synthesis
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Q145
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following events does not occur in rough endoplasmic reticulum?
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Protein folding
- B. Protein glycosylation
- C. Cleavage of signal peptide
- D. Phospholipid synthesis
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Q146
BIOLOGY
Unit 4: Plant Physiology
Which of these statements is incorrect?
↻ Repeated question — also appeared in
2018 (12 sets)
- A. (1) Enzymes of TCA cycle are present in mitochondrial matrix.
- B. (2) Glycolysis occurs in cytosol.
- C. (3) Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
- D. (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.
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Q146
BIOLOGY
Unit 4: Plant Physiology
Which of these statements is incorrect?
↻ Repeated question — also appeared in
2018 (12 sets)
- A. Enzymes of TCA cycle are present in mitochondrial matrix.
- B. Glycolysis occurs in cytosol.
- C. Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
- D. Oxidative phosphorylation takes place in outer mitochondrial membrane.
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Q147
BIOLOGY
Unit 3: Cell Structure and Function
Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as
↻ Repeated question — also appeared in
2018 (14 sets)
- A. (1) Polysome
- B. (2) Polyhedral bodies
- C. (3) Plastidome
- D. (4) Nucleosome
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Q148
BIOLOGY
Unit 3: Cell Structure and Function
Select the incorrect match:
↻ Repeated question — also appeared in
2018 (11 sets)
- A. (1) Lampbrush – Diplotene bivalents
- B. (2) Allosomes – Sex chromosomes
- C. (3) Submetacentric – L-shaped chromosomes
- D. (4) Polytene – Oocytes of amphibians
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Q149
BIOLOGY
Unit 3: Cell Structure and Function
Nissl bodies are mainly composed of
↻ Repeated question — also appeared in
2018 (10 sets)
- A. (1) Proteins and lipids
- B. (2) DNA and RNA
- C. (3) Nucleic acids and SER
- D. (4) Free ribosomes and RER
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Q150
BIOLOGY
Unit 5: Human Physiology
Which of the following terms describe human dentition?
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2018 (15 sets)
- A. (1) Thecodont, Diphyodont, Homodont
- B. (2) Thecodont, Diphyodont, Heterodont
- C. (3) Pleurodont, Monophyodont, Homodont
- D. (4) Pleurodont, Diphyodont, Heterodont
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Q151
BIOLOGY
Unit 5: Human Physiology
Match the items given in Column I with those in Column II:
a. Glycosuria, b. Gout, c. Renal calculi, d. Glomerular nephritis
i. Accumulation of uric acid in joints, ii. Mass of crystallised salts within the kidney, iii. Inflammation in glomeruli, iv. Presence of glucose in urine
- A. (1) iii ii iv i
- B. (2) i ii iii iv
- C. (3) ii iii i iv
- D. (4) iv i ii iii
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Q152
BIOLOGY
Unit 5: Human Physiology
Match the items given in Column I with those in Column II:
Column I (Function): a. Ultrafiltration, b. Concentration of urine, c. Transport of urine, d. Storage of urine
Column II (Part of Excretory System): i. Henle’s loop, ii. Ureter, iii. Urinary bladder, iv. Malpighian corpuscle, v. Proximal convoluted tubule
↻ Repeated question — also appeared in
2018 (8 sets)
- A. (1) iv v ii iii
- B. (2) iv i ii iii
- C. (3) v iv i ii
- D. (4) v iv i iii
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Q153
BIOLOGY
Unit 7: Genetics and Evolution
The similarity of bone structure in the forelimbs of many vertebrates is an example of
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2018 (14 sets)
- A. (1) Homology
- B. (2) Analogy
- C. (3) Convergent evolution
- D. (4) Adaptive radiation
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Q154
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is not an autoimmune disease?
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2018 (6 sets)
- A. (1) Psoriasis
- B. (2) Rheumatoid arthritis
- C. (3) Alzheimer’s disease
- D. (4) Vitiligo
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Q155
BIOLOGY
Unit 7: Genetics and Evolution
Among the following sets of examples for divergent evolution, select the incorrect option:
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2018 (13 sets)
- A. (1) Forelimbs of man, bat and cheetah
- B. (2) Heart of bat, man and cheetah
- C. (3) Brain of bat, man and cheetah
- D. (4) Eye of octopus, bat and man
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Q156
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
a. Dominance, b. Co-dominance, c. Multiple allele, d. Incomplete dominance, e. Polygenic inheritance
↻ Repeated question — also appeared in
2018 (13 sets)
- A. (1) b, c and e
- B. (2) a, b and c
- C. (3) b, d and e
- D. (4) a, c and e
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Q157
BIOLOGY
Unit 8: Biology and Human Welfare
In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?
↻ Repeated question — also appeared in
2018 (9 sets)
- A. (1) Elephantiasis
- B. (2) Ascariasis
- C. (3) Ringworm disease
- D. (4) Amoebiasis
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Q158
BIOLOGY
Unit 8: Biology and Human Welfare
Conversion of milk to curd improves its nutritional value by increasing the amount of
↻ Repeated question — also appeared in
2018 (14 sets)
- A. (1) Vitamin D
- B. (2) Vitamin A
- C. (3) Vitamin B12
- D. (4) Vitamin E
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Q158
BIOLOGY
Unit 8: Biology and Human Welfare
Conversion of milk to curd improves its nutritional value by increasing the amount of
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Vitamin D
- B. Vitamin A
- C. Vitamin B12
- D. Vitamin E
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Q159
BIOLOGY
Unit 5: Human Physiology
Which of the following is an amino acid derived hormone?
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2018 (16 sets)
- A. (1) Epinephrine
- B. (2) Ecdysone
- C. (3) Estradiol
- D. (4) Estriol
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Q159
BIOLOGY
Unit 5: Human Physiology
Which of the following is an amino acid derived hormone?
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2018 (16 sets)
- A. Epinephrine
- B. Ecdysone
- C. Estradiol
- D. Estriol
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Q160
BIOLOGY
Unit 5: Human Physiology
Which of the following structures or regions is incorrectly paired with its function?
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2018 (14 sets)
- A. (1) Medulla oblongata : controls respiration and cardiovascular reflexes.
- B. (2) Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement.
- C. (3) Hypothalamus : production of releasing hormones and regulation of temperature, hunger and thirst.
- D. (4) Corpus callosum : band of fibers connecting left and right cerebral hemispheres.
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Q160
BIOLOGY
Unit 5: Human Physiology
Which of the following structures or regions is incorrectly paired with its function?
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Medulla oblongata : controls respiration and cardiovascular reflexes.
- B. Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement.
- C. Hypothalamus : production of releasing hormones and regulation of temperature, hunger and thirst.
- D. Corpus callosum : band of fibers connecting left and right cerebral hemispheres.
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Q161
BIOLOGY
Unit 5: Human Physiology
Which of the following hormones can play a significant role in osteoporosis?
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2018 (16 sets)
- A. (1) Aldosterone and Prolactin
- B. (2) Progesterone and Aldosterone
- C. (3) Estrogen and Parathyroid hormone
- D. (4) Parathyroid hormone and Prolactin
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Q161
BIOLOGY
Unit 5: Human Physiology
Which of the following hormones can play a significant role in osteoporosis?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Aldosterone and Prolactin
- B. Progesterone and Aldosterone
- C. Estrogen and Parathyroid hormone
- D. Parathyroid hormone and Prolactin
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Q162
BIOLOGY
Unit 5: Human Physiology
The transparent lens in the human eye is held in its place by
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2018 (15 sets)
- A. ligaments attached to the ciliary body
- B. ligaments attached to the iris
- C. smooth muscles attached to the iris
- D. smooth muscles attached to the ciliary body
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Q163
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following animals does not undergo metamorphosis?
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2018 (5 sets)
- A. Earthworm
- B. Tunicate
- C. Moth
- D. Starfish
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Q164
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.
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2018 (6 sets)
- A. Amphibia
- B. Reptilia
- C. Aves
- D. Osteichthyes
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