Q1
PHYSICS
Unit 19: Electronic Devices
The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. current in n-type > current in p-type.
- B. No current will flow in p-type, current will only flow in n-type.
- C. current in n-type = current in p-type.
- D. current in p-type > current in n-type.
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Q1
PHYSICS
Unit 19: Electronic Devices
The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external electric field is applied across each of them. Compare the currents in them.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. current in n-type > current in p-type
- B. No current will flow in p-type, current will only flow in n-type
- C. current in n-type = current in p-type
- D. current in p-type > current in n-type
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Q2
PHYSICS
Unit 2: Kinematics
A small block slides down on a smooth inclined plane, starting from rest at time t=0. Let Sn be the distance travelled by the block in the interval t=n-1 to t=n. Then, the ratio Sn / Sn+1 is :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. (2n+1)/(2n-1)
- B. 2n/(2n-1)
- C. (2n-1)/2n
- D. (2n-1)/(2n+1)
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Q2
PHYSICS
Unit 2: Kinematics
A small block slides down on a smooth inclined plane, starting from rest at time t=0. Let Sn be the distance travelled by the block in the interval t=n-1 to t=n. Then, the ratio Sn / Sn+1 is:
↻ Repeated question — also appeared in
2021 (9 sets)
- A. (2n+1)/(2n-1)
- B. 2n/(2n-1)
- C. (2n-1)/2n
- D. (2n-1)/(2n+1)
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Q3
PHYSICS
Unit 6: Gravitation
The escape velocity from the Earth’s surface is v. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is :
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2021 (12 sets)
- A. 3 v
- B. 4 v
- C. v
- D. 2 v
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Q3
PHYSICS
Unit 6: Gravitation
The escape velocity from the Earth’s surface is v. The escape velocity from the surface of another planet having a radius four times that of Earth and the same mass density is:
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2021 (12 sets)
- A. 3v
- B. 4v
- C. v
- D. 2v
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Q5
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance R are connected in series to an ac source of potential difference V volts. Potential difference across L, C and R is 40 V, 10 V and 40 V, respectively. The amplitude of current flowing through LCR series circuit is 10√2 A. The impedance of the circuit is:
↻ Repeated question — also appeared in
2021 (4 sets)
- A. 4 Ω
- B. 5 Ω
- C. 4√2 Ω
- D. 5√2 Ω
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Q6
PHYSICS
Unit 11: Electrostatics
Polar molecules are the molecules:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. acquire a dipole moment only when magnetic field is absent
- B. having a permanent electric dipole moment
- C. having zero dipole moment
- D. acquire a dipole moment only in the presence of electric field due to displacement of charges
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Q7
PHYSICS
Unit 1: Physics and Measurement
A screw gauge gives the following readings when used to measure the diameter of a wire: Main scale reading: 0 mm, Circular scale reading: 52 divisions. Given that 1 mm on main scale corresponds to 100 divisions on the circular scale. The diameter of the wire from the above data is:
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2021 (6 sets)
- A. 0.26 cm
- B. 0.052 cm
- C. 0.52 cm
- D. 0.026 cm
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Q8
PHYSICS
Unit 18: Atoms and Nuclei
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 2/3
- B. 2/(3^2)
- C. 1/2
- D. 1/(2^1.5)
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Q9
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
The number of photons per second on an average emitted by the source of monochromatic light of wavelength 600 nm, when it delivers the power of 3.3×10^-3 watt will be: (h=6.6×10^-34 Js)
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 10^16
- B. 10^15
- C. 10^18
- D. 10^17
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Q11
PHYSICS
Unit 7: Properties of Solids and Liquids
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is d/2, then the viscous force acting on the ball will be:
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 3Mg/2
- B. 2Mg
- C. Mg/2
- D. Mg
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Q12
PHYSICS
Unit 11: Electrostatics
A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and the area of each plate is A, the energy stored in the capacitor is: (ε0=permittivity of free space)
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 1/2 * ε0 * E^2 * Ad
- B. ε0 * E^2 * Ad
- C. 1/2 * ε0 * E^2
- D. ε0 * E * Ad
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Q14
PHYSICS
Unit 12: Current Electricity
In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, the balance point occurs?
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 64 cm
- B. 62 cm
- C. 60 cm
- D. 21.6 cm
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Q14
PHYSICS
Unit 12: Current Electricity
In a potentiometer circuit a cell of EMF 1.5 V gives a balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, the balance point occurs?
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 64 cm
- B. 62 cm
- C. 60 cm
- D. 21.6 cm
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Q15
PHYSICS
Unit 12: Current Electricity
The effective resistance of a parallel connection that consists of four wires of equal length, equal area of cross-section and same material is 0.25 Ω. What will be the effective resistance if they are connected in series?
↻ Repeated question — also appeared in
2021 (12 sets)
- A. 1 Ω
- B. 4 Ω
- C. 0.25 Ω
- D. 0.5 Ω
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Q15
PHYSICS
Unit 12: Current Electricity
The effective resistance of a parallel connection that consists of four wires of equal length, equal area of cross-section and same material is 0.25 Ω. What will be the effective resistance if they are connected in series?
↻ Repeated question — also appeared in
2021 (12 sets)
- A. 1 Ω
- B. 4 Ω
- C. 0.25 Ω
- D. 0.5 Ω
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Q16
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An infinitely long straight conductor carries a current of 5 A. An electron is moving with a speed of 10^5 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 4π × 10^-20 N
- B. 8 × 10^-20 N
- C. 4 × 10^-20 N
- D. 8π × 10^-20 N
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Q17
PHYSICS
Unit 1: Physics and Measurement
If E and G respectively denote energy and gravitational constant, then E/G has the dimensions of:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. [ M ] [ L^0 ] [ T^0 ]
- B. [ M^2 ] [ L^-2 ] [ T^-1 ]
- C. [ M^2 ] [ L^-1 ] [ T^0 ]
- D. [ M ] [ L^-1 ] [ T^-1 ]
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Q19
PHYSICS
Unit 18: Atoms and Nuclei
A radioactive nucleus X(^A_Z) undergoes spontaneous decay in the sequence X(^A_Z) -> B(^A_{Z-1}) -> C(^A_{Z-3}) -> D(^A_{Z-2}), where Z is the atomic number of element X. The possible decay particles in the sequence are:
↻ Repeated question — also appeared in
2021 (2 sets)
- A. β^+, α, β^-
- B. β^-, α, β^+
- C. α, β^-, β^+
- D. α, β^+, β^-
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Q20
PHYSICS
Unit 10: Oscillations and Waves
A body is executing simple harmonic motion with frequency ‘n’, the frequency of its potential energy is:
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2021 (11 sets)
- A. 3n
- B. 4n
- C. n
- D. 2n
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Q21
PHYSICS
Unit 10: Oscillations and Waves
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 3.14 s
- B. 0.628 s
- C. 0.0628 s
- D. 6.28 s
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Q22
PHYSICS
Unit 18: Atoms and Nuclei
A nucleus with mass number 240 breaks into two fragments each of mass number 120. The binding energy per nucleon of unfragmented nuclei is 7.6 MeV while that of fragments is 8.5 MeV. The total gain in the Binding Energy in the process is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 804 MeV
- B. 216 MeV
- C. 0.9 MeV
- D. 9.4 MeV
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Q23
PHYSICS
Unit 16: Optics
A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since:
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2021 (9 sets)
- A. a large aperture contributes to the quality and visibility of the images.
- B. a large area of the objective ensures better light gathering power.
- C. a large aperture provides a better resolution.
- D. all of the above.
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Q24
PHYSICS
Unit 16: Optics
A convex lens ‘A’ of focal length 20 cm and a concave lens ‘B’ of focal length 5 cm are kept along the same axis with a distance ‘d’ between them. If a parallel beam of light falling on ‘A’ leaves ‘B’ as a parallel beam, then the distance ‘d’ in cm will be:
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 50
- B. 30
- C. 25
- D. 15
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Q26
PHYSICS
Unit 11: Electrostatics
A capacitor of capacitance ‘C’, is connected across an ac source of voltage V, given by V = V_0 sin(ωt). The displacement current between the plates of the capacitor, would then be given by:
↻ Repeated question — also appeared in
2021 (1 set)
- A. I_d = (V_0 / ωC) sin(ωt)
- B. I_d = V_0 ωC sin(ωt)
- C. I_d = V_0 ωC cos(ωt)
- D. I_d = (V_0 / ωC) cos(ωt)
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Q27
PHYSICS
Unit 19: Electronic Devices
Consider the following statements (A) and (B) and identify the correct answer: (A) A zener diode is connected in reverse bias, when used as a voltage regulator. (B) The potential barrier of p-n junction lies between 0.1 V to 0.3 V.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. (A) is correct and (B) is incorrect.
- B. (A) is incorrect but (B) is correct.
- C. (A) and (B) both are correct.
- D. (A) and (B) both are incorrect.
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Q28
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A thick current carrying cable of radius ‘R’ carries current ‘I’ uniformly distributed across its cross-section. The variation of magnetic field B(r) due to the cable with the distance ‘r’ from the axis of the cable is represented by:
↻ Repeated question — also appeared in
2021 (1 set)
- A. B is proportional to r for r < R and B is proportional to 1/r for r > R
- B. B is constant for r < R and B is zero for r > R
- C. B is zero for r < R and B is constant for r > R
- D. B is proportional to r^2 for r < R and B is proportional to 1/r^2 for r > R
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Q29
PHYSICS
Unit 8: Thermodynamics
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool from 80°C to 60°C at a room temperature same at 20°C is:
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 10t/13
- B. 5t/13
- C. 13t/10
- D. 13t/5
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Q29
PHYSICS
Unit 8: Thermodynamics
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool from 80°C to 60°C at a room temperature same at 20°C is:
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 10t/13
- B. 5t/13
- C. 13t/10
- D. 13t/5
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Q30
PHYSICS
Unit 1: Physics and Measurement
If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.
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2021 (12 sets)
- A. [F] [A] [T^-1]
- B. [F] [A^-1] [T]
- C. [F] [A] [T]
- D. [F] [A] [T^2]
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Q30
PHYSICS
Unit 1: Physics and Measurement
If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.
↻ Repeated question — also appeared in
2021 (12 sets)
- A. [F] [A] [T^-1]
- B. [F] [A^-1] [T]
- C. [F] [A] [T]
- D. [F] [A] [T^2]
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Q32
PHYSICS
Unit 4: Work Energy and Power
Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of the input energy. How much power is generated by the turbine? (g=10 m/s²)
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 12.3 kW
- B. 7.0 kW
- C. 10.2 kW
- D. 8.1 kW
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Q33
PHYSICS
Unit 9: Kinetic Theory of Gases
Match Column - I and Column - II and choose the correct match from the given choices.
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2021 (1 set)
- A. (A)-(Q), (B)-(P), (C)-(S), (D)-(R)
- B. (A)-(R), (B)-(Q), (C)-(P), (D)-(S)
- C. (A)-(R), (B)-(P), (C)-(S), (D)-(Q)
- D. (A)-(Q), (B)-(R), (C)-(S), (D)-(P)
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Q35
PHYSICS
Unit 11: Electrostatics
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres (σ1/σ2) is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. (R1/R2)
- B. (R2/R1)^2
- C. (R1/R2)^2
- D. (R2/R1)
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Q37
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
↻ Repeated question — also appeared in
2021 (10 sets)
- A. 2 A
- B. 4 A
- C. 0.2 A
- D. 0.4 A
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Q38
PHYSICS
Unit 2: Kinematics
A car starts from rest and accelerates at 5 m/s². At t=4 s, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at t=6 s? (Take g=10 m/s²)
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 20√2 m/s, 0
- B. 20√2 m/s, 10 m/s²
- C. 20 m/s, 5 m/s²
- D. 20 m/s, 0
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Q40
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A series LCR circuit containing 5.0 H inductor, 80 µF capacitor and 40 Ω resistor is connected to 230 V variable frequency ac source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be:
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 46 rad/s and 54 rad/s
- B. 42 rad/s and 58 rad/s
- C. 25 rad/s and 75 rad/s
- D. 50 rad/s and 25 rad/s
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Q41
PHYSICS
Unit 11: Electrostatics
Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
↻ Repeated question — also appeared in
2021 (12 sets)
- A. 1520 V
- B. 1980 V
- C. 660 V
- D. 1320 V
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Q41
PHYSICS
Unit 11: Electrostatics
Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
↻ Repeated question — also appeared in
2021 (12 sets)
- A. 1520 V
- B. 1980 V
- C. 660 V
- D. 1320 V
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Q43
PHYSICS
Unit 3: Laws of Motion
A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is (g=10 m/s²) nearly:
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 2.1 kg m/s
- B. 1.4 kg m/s
- C. 0 kg m/s
- D. 4.2 kg m/s
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Q43
PHYSICS
Unit 3: Laws of Motion
A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is (g=10 m/s^2) nearly :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 2.1 kg m/s
- B. 1.4 kg m/s
- C. 0 kg m/s
- D. 4.2 kg m/s
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Q44
PHYSICS
Unit 5: Rotational Motion
A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at 20 cm and another unknown mass ‘m’ is suspended from the rod at 160 cm mark. Find the value of ‘m’ such that the rod is in equilibrium. (g=10 m/s²)
↻ Repeated question — also appeared in
2021 (2 sets)
- A. 1/6 kg
- B. 1/12 kg
- C. 1/2 kg
- D. 1/3 kg
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Q45
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current carrying coil in the shape of: (i) an equilateral triangle of side ‘a’. (ii) a square of side ‘a’. The magnetic dipole moments of the coil in each case respectively are :
↻ Repeated question — also appeared in
2021 (5 sets)
- A. 3 Ia^2 and 4 Ia^2
- B. 4 Ia^2 and 3 Ia^2
- C. 3 Ia^2 and 3 Ia^2
- D. 3 Ia^2 and Ia^2
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Q46
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
Two conducting circular loops of radii R1 and R2 are placed in the same plane with their centres coinciding. If R1 >> R2, the mutual inductance M between them will be directly proportional to :
↻ Repeated question — also appeared in
2021 (6 sets)
- A. R1/R2
- B. R2^2/R1
- C. R1^2/R2
- D. R2/R1
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Q51
CHEMISTRY
Unit 11: d- and f-Block Elements
Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of :
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2021 (10 sets)
- A. lanthanoid contraction
- B. having similar chemical properties
- C. belonging to same group
- D. diagonal relationship
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Q52
CHEMISTRY
Unit 5: Solutions
The right option for the statement “Tyndall effect is exhibited by”, is :
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2021 (7 sets)
- A. Starch solution
- B. Urea solution
- C. NaCl solution
- D. Glucose solution
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Q53
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Match List - I with List - II. List - I (a)PCl5 (b)SF6 (c)BrF5 (d)BF3 List - II (i)Square pyramidal (ii)Trigonal planar (iii)Octahedral (iv)Trigonal bipyramidal
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2021 (3 sets)
- A. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- B. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- C. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
- D. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
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Q54
CHEMISTRY
Unit 6: Equilibrium
The pKb of dimethylamine and pKa of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for the pH of dimethylammonium acetate solution is :
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2021 (10 sets)
- A. 7.75
- B. 6.25
- C. 8.50
- D. 5.50
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Q54
CHEMISTRY
Unit 6: Equilibrium
The pKb of dimethylamine and pKa of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for the pH of dimethylammonium acetate solution is :
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2021 (10 sets)
- A. 7.75
- B. 6.25
- C. 8.50
- D. 5.50
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Q55
CHEMISTRY
Unit 10: p-Block Elements
The maximum temperature that can be achieved in blast furnace is :
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2021 (2 sets)
- A. upto 1900 K
- B. upto 5000 K
- C. upto 1200 K
- D. upto 2200 K
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Q56
BIOLOGY
Unit 8: Biology and Human Welfare
Given below are two statements: Statement I: Aspirin and Paracetamol belong to the class of narcotic analgesics. Statement II: Morphine and Heroin are non-narcotic analgesics. In the light of the above statements, choose the correct answer from the options given below.
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2021 (5 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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Q56
BIOLOGY
Unit 8: Biology and Human Welfare
Given below are two statements: Statement I: Aspirin and Paracetamol belong to the class of narcotic analgesics. Statement II: Morphine and Heroin are non-narcotic analgesics. In the light of the above statements, choose the correct answer from the options given below.
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2021 (5 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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Q57
CHEMISTRY
Unit 19: Biomolecules
Which one of the following polymers is prepared by addition polymerisation ?
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2021 (3 sets)
- A. Novolac
- B. Dacron
- C. Teflon
- D. Nylon-66
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Q57
CHEMISTRY
Unit 15: Hydrocarbons
Which one of the following polymers is prepared by addition polymerisation?
- A. Novolac
- B. Dacron
- C. Teflon
- D. Nylon-66
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Q58
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :
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2021 (11 sets)
- A. sp2 and 6
- B. sp2 and 8
- C. sp3 and 4
- D. sp3 and 6
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Q58
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :
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2021 (11 sets)
- A. sp2 and 6
- B. sp2 and 8
- C. sp3 and 4
- D. sp3 and 6
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Q59
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
Which of the following reactions is the metal displacement reaction? Choose the right option.
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- A. Fe + 2HCl → FeCl2 + H2
- B. 2Pb(NO3)2 → 2PbO + 4NO2 + O2
- C. 2KClO3 → 2KCl + 3O2
- D. Cr2O3 + 2Al → Al2O3 + 2Cr
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Q60
PHYSICS
Unit 18: Atoms and Nuclei
Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
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- A. Gamma (γ)
- B. Neutron (n)
- C. Beta (β-)
- D. Alpha (α)
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Q61
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1]
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- A. CH3
- B. CH4
- C. CH
- D. CH2
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Q63
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Dihedral angle of least stable conformer of ethane is :
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- A. 60°
- B. 0°
- C. 120°
- D. 180°
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Q64
CHEMISTRY
Unit 10: p-Block Elements
Statement I: Acid strength increases in the order given as HF << HCl << HBr << HI. Statement II: As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr and HI decreases and so the acid strength increases. In the light of the above statements, choose the correct answer from the options given below.
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- 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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Q65
CHEMISTRY
Unit 19: Biomolecules
The RBC deficiency is deficiency disease of :
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- A. Vitamin B1
- B. Vitamin B2
- C. Vitamin B12
- D. Vitamin B6
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Q66
CHEMISTRY
Unit 12: Coordination Compounds
Ethylene diaminetetraacetate (EDTA) ion is :
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- A. Bidentate ligand with two “N” donor atoms
- B. Tridentate ligand with three “N” donor atoms
- C. Hexadentate ligand with four “O” and two “N” donor atoms
- D. Unidentate ligand
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Q67
PHYSICS
Unit 15: Electromagnetic Waves
A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, c=3.0×10^8 ms^-1]
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2021 (10 sets)
- A. 2192 m
- B. 21.92 cm
- C. 219.3 m
- D. 219.2 m
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Q69
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductance of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm^2 mol^-1 respectively. The molar conductance of CH3COOH at infinite dilution is.
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2021 (10 sets)
- A. 698.28 S cm^2 mol^-1
- B. 540.48 S cm^2 mol^-1
- C. 201.28 S cm^2 mol^-1
- D. 390.71 S cm^2 mol^-1
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Q70
CHEMISTRY
Unit 10: p-Block Elements
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
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- A. Distillation
- B. Zone refining
- C. Electrolysis
- D. Chromatography
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Q71
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
What is the IUPAC name of the organic compound formed in the following chemical reaction? Acetone + (i) C2H5MgBr / dry Ether (ii) H2O / H+ -> Product
↻ Repeated question — also appeared in
2021 (5 sets)
- A. pentan-3-ol
- B. 2-methyl butan-2-ol
- C. 2-methyl propan-2-ol
- D. pentan-2-ol
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Q73
CHEMISTRY
Unit 5: Solutions
The following solutions were prepared by dissolving 10 g of glucose, 10 g of urea, and 10 g of sucrose in 250 ml of water. The right option for the decreasing order of osmotic pressure of these solutions is:
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2021 (1 set)
- A. P2 > P3 > P1
- B. P3 > P1 > P2
- C. P2 > P1 > P3
- D. P1 > P2 > P3
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Q73
CHEMISTRY
Unit 5: Solutions
The following solutions were prepared by dissolving 10 g of glucose (C6H12O6) in 250 ml of water (P1), 10 g of urea (CH4N2O) in 250 ml of water (P2) and 10 g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is :
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2021 (9 sets)
- A. P2 > P3 > P1
- B. P3 > P1 > P2
- C. P2 > P1 > P3
- D. P1 > P2 > P3
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Q74
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The compound which shows metamerism is :
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- A. C3H6O
- B. C4H10O
- C. C5H12
- D. C3H8O
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Q74
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The compound which shows metamerism is :
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2021 (10 sets)
- A. C3H6O
- B. C4H10O
- C. C5H12
- D. C3H8O
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Q75
CHEMISTRY
Unit 10: p-Block Elements
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
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- A. Noble gases have weak dispersion forces.
- B. Noble gases have large positive values of electron gain enthalpy.
- C. Noble gases are sparingly soluble in water.
- D. Noble gases have very high melting and boiling points.
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Q77
CHEMISTRY
Unit 5: Solutions
Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are :
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- A. 2, 1
- B. 12, 6
- C. 8, 4
- D. 6, 12
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Q78
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is :
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- A. Magnesium chloride
- B. Beryllium chloride
- C. Calcium chloride
- D. Strontium chloride
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Q79
CHEMISTRY
Unit 4: Chemical Thermodynamics
Which one among the following is the correct option for right relationship between CP and CV for one mole of ideal gas ?
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- A. CP = RCV
- B. CV = RCP
- C. CP / CV = R
- D. CP - CV = R
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Q80
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
The correct sequence of bond enthalpy of ‘C–X’ bond is :
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- A. CH3−F < CH3−Cl > CH3−Br > CH3−I
- B. CH3−Cl > CH3−F > CH3−Br > CH3−I
- C. CH3−F < CH3−Cl < CH3−Br < CH3−I
- D. CH3−F > CH3−Cl > CH3−Br > CH3−I
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Q81
CHEMISTRY
Unit 15: Hydrocarbons
The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on ?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Hofmann Rule
- B. Huckel’s Rule
- C. Saytzeff’s Rule
- D. Hund’s Rule
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Q82
CHEMISTRY
Unit 5: Solutions
The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :
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- A. 2
- B. 3
- C. 7
- D. 5
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Q84
CHEMISTRY
Unit 10: p-Block Elements
The structures of beryllium chloride in solid state and vapour phase, are :
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- A. Dimer and Linear, respectively
- B. Chain in both
- C. Chain and dimer, respectively
- D. Linear in both
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Q85
CHEMISTRY
Unit 11: d- and f-Block Elements
The incorrect statement among the following is :
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- A. Lanthanoids are good conductors of heat and electricity.
- B. Actinoids are highly reactive metals, especially when finely divided.
- C. Actinoid contraction is greater for element to element than Lanthanoid contraction.
- D. Most of the trivalent Lanthanoid ions are colorless in the solid state.
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Q87
CHEMISTRY
Unit 5: Solutions
The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is : [At 45°C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]
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- A. 336 mm of Hg
- B. 350 mm of Hg
- C. 160 mm of Hg
- D. 168 mm of Hg
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Q88
CHEMISTRY
Unit 15: Hydrocarbons
CH3CH2COO-Na+ + NaOH, ? -> CH3CH3 + Na2CO3. Consider the above reaction and identify the missing reagent/chemical.
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- A. CaO
- B. DIBAL-H
- C. B2H6
- D. Red Phosphorus
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Q89
CHEMISTRY
Unit 10: p-Block Elements
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it ?
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- A. NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
- B. CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing power
- C. HF < HCl < HBr < HI : Increasing acidic strength
- D. H2O < H2S < H2Se < H2Te : Increasing pKa values
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Q89
CHEMISTRY
Unit 10: p-Block Elements
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
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2021 (10 sets)
- A. NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
- B. CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing power
- C. HF < HCl < HBr < HI : Increasing acidic strength
- D. H2O < H2S < H2Se < H2Te : Increasing pKa values
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Q90
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following molecules is non-polar in nature ?
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- A. SbCl5
- B. NO2
- C. POCl3
- D. CH2O
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Q90
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following molecules is non-polar in nature?
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2021 (11 sets)
- A. SbCl5
- B. NO2
- C. POCl3
- D. CH2O
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Q92
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 0°C is : [Given R=0.082 L atm mol−1 K−1, T=273 K]
↻ Repeated question — also appeared in
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- A. 25.18
- B. 26.02
- C. 2.518
- D. 2.602
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Q93
CHEMISTRY
Unit 12: Coordination Compounds
Match List - I with List - II. List - I: (a) [Fe(CN)6]3−, (b) [Fe(H2O)6]3+, (c) [Fe(CN)6]4−, (d) [Fe(H2O)6]2+. List - II: (i) 5.92 BM, (ii) 0 BM, (iii) 4.90 BM, (iv) 1.73 BM.
- A. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
- B. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
- C. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
- D. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
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Q94
CHEMISTRY
Unit 8: Chemical Kinetics
The slope of Arrhenius Plot ln k v/s 1/T of first order reaction is −5×10^3 K. The value of Ea of the reaction is. [Given R=8.314 JK−1 mol−1]
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- A. 166 kJ mol−1
- B. −83 kJ mol−1
- C. 41.5 kJ mol−1
- D. 83.0 kJ mol−1
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Q95
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductivity of 0.007 M acetic acid is 20 S cm2 mol−1. What is the dissociation constant of acetic acid? Given: Λ°H+ = 350 S cm2 mol−1, Λ°CH3COO− = 50 S cm2 mol−1.
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2021 (7 sets)
- A. 1.75×10−5 mol L−1
- B. 2.50×10−5 mol L−1
- C. 1.75×10−4 mol L−1
- D. 2.50×10−4 mol L−1
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Q97
CHEMISTRY
Unit 4: Chemical Thermodynamics
For irreversible expansion of an ideal gas under isothermal condition, the correct option is:
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- A. ΔU=0, ΔStotal ≠ 0
- B. ΔU ≠ 0, ΔStotal=0
- C. ΔU=0, ΔStotal=0
- D. ΔU ≠ 0, ΔStotal ≠ 0
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Q100
CHEMISTRY
Unit 2: Atomic Structure
From the following pairs of ions which one is not an iso-electronic pair?
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- A. Mn2+, Fe3+
- B. Fe2+, Mn2+
- C. O2−, F−
- D. Na+, Mg2+
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Q101
BIOLOGY
Unit 9: Biotechnology and Its Applications
DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as:
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- A. Dark red bands
- B. Bright blue bands
- C. Yellow bands
- D. Bright orange bands
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Q102
BIOLOGY
Unit 6: Reproduction
Which of the following plants is monoecious?
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- A. Marchantia polymorpha
- B. Cycas circinalis
- C. Carica papaya
- D. Chara
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Q104
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is an incorrect statement?
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- A. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
- B. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
- C. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
- D. Microbodies are present both in plant and animal cells.
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Q104
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is an incorrect statement?
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2021 (11 sets)
- A. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
- B. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
- C. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
- D. Microbodies are present both in plant and animal cells.
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Q105
BIOLOGY
Unit 6: Reproduction
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:
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2021 (11 sets)
- A. Chasmogamy
- B. Cleistogamy
- C. Xenogamy
- D. Geitonogamy
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Q105
BIOLOGY
Unit 6: Reproduction
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. Chasmogamy
- B. Cleistogamy
- C. Xenogamy
- D. Geitonogamy
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Q106
BIOLOGY
Unit 4: Plant Physiology
The first stable product of CO2 fixation in sorghum is:
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- A. Succinic acid
- B. Phosphoglyceric acid
- C. Pyruvic acid
- D. Oxaloacetic acid
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Q106
BIOLOGY
Unit 4: Plant Physiology
The first stable product of CO2 fixation in sorghum is:
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2021 (11 sets)
- A. Succinic acid
- B. Phosphoglyceric acid
- C. Pyruvic acid
- D. Oxaloacetic acid
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Q107
BIOLOGY
Unit 10: Ecology and Environment
Which of the following statements is not correct?
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- A. Pyramid of energy is always upright.
- B. Pyramid of numbers in a grassland ecosystem is upright.
- C. Pyramid of biomass in sea is generally inverted.
- D. Pyramid of biomass in sea is generally upright.
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Q107
BIOLOGY
Unit 10: Ecology and Environment
Which of the following statements is not correct?
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- A. Pyramid of energy is always upright.
- B. Pyramid of numbers in a grassland ecosystem is upright.
- C. Pyramid of biomass in sea is generally inverted.
- D. Pyramid of biomass in sea is generally upright.
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Q108
BIOLOGY
Unit 1: Diversity in Living World
Which of the following algae produce Carrageen?
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- A. Red algae
- B. Blue-green algae
- C. Green algae
- D. Brown algae
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Q109
BIOLOGY
Unit 9: Biotechnology and Its Applications
When gene targeting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as:
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- A. Molecular diagnosis
- B. Safety testing
- C. Biopiracy
- D. Gene therapy
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Q110
BIOLOGY
Unit 4: Plant Physiology
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:
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- A. Plasticity
- B. Maturity
- C. Elasticity
- D. Flexibility
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Q111
BIOLOGY
Unit 10: Ecology and Environment
Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
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- A. Mutualism
- B. Predation
- C. Resource partitioning
- D. Competitive release
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Q113
BIOLOGY
Unit 4: Plant Physiology
The plant hormone used to destroy weeds in a field is:
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- A. 2, 4-D
- B. IBA
- C. IAA
- D. NAA
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Q114
BIOLOGY
Unit 7: Genetics and Evolution
The factor that leads to Founder effect in a population is:
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- A. Mutation
- B. Genetic drift
- C. Natural selection
- D. Genetic recombination
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Q116
BIOLOGY
Unit 10: Ecology and Environment
The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as:
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- A. Standing state
- B. Standing crop
- C. Climax
- D. Climax community
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Q117
BIOLOGY
Unit 1: Diversity in Living World
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
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- A. Homosporous
- B. Heterosporous
- C. Homosorus
- D. Heterosorus
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Q118
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 II
- C. Metaphase I
- D. Metaphase II
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Q119
BIOLOGY
Unit 1: Diversity in Living World
Gemmae are present in:
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- A. Some Gymnosperms
- B. Some Liverworts
- C. Mosses
- D. Pteridophytes
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Q120
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?
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- A. Extension, Denaturation, Annealing
- B. Annealing, Denaturation, Extension
- C. Denaturation, Annealing, Extension
- D. Denaturation, Extension, Annealing
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Q121
BIOLOGY
Unit 7: Genetics and Evolution
Complete the flow chart on central dogma.
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- A. (a)-Replication; (b)-Transcription; (c)-Translation; (d)-Protein
- B. (a)-Transduction; (b)-Translation; (c)-Replication; (d)-Protein
- C. (a)-Replication; (b)-Transcription; (c)-Transduction; (d)-Protein
- D. (a)-Translation; (b)-Replication; (c)-Transcription; (d)-Transduction
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Q122
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Diadelphous stamens are found in:
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- A. Pea
- B. China rose and citrus
- C. China rose
- D. Citrus
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Q122
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Diadelphous stamens are found in :
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- A. Pea
- B. China rose and citrus
- C. China rose
- D. Citrus
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Q123
BIOLOGY
Unit 10: Ecology and Environment
Amensalism can be represented as:
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- A. Species A (-) ; Species B (-)
- B. Species A (-) ; Species B (0)
- C. Species A (+) ; Species B (0)
- D. Species A (-) ; Species B (+)
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Q123
BIOLOGY
Unit 10: Ecology and Environment
Amensalism can be represented as :
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- A. Species A (−) ; Species B (−)
- B. Species A (+) ; Species B (0)
- C. Species A (−) ; Species B (0)
- D. Species A (+) ; Species B (+)
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Q124
BIOLOGY
Unit 4: Plant Physiology
Match List - I with List - II. (a) Cohesion, (b) Adhesion, (c) Surface tension, (d) Guttation.
- A. (1)(iii)(i)(iv)(ii)
- B. (2)(ii)(i)(iv)(iii)
- C. (3)(ii)(iv)(i)(iii)
- D. (4)(iv)(iii)(ii)(i)
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Q125
BIOLOGY
Unit 10: Ecology and Environment
In the equation GPP-R=NPP, R represents:
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- A. Environment factor
- B. Respiration losses
- C. Radiant energy
- D. Retardation factor
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Q125
BIOLOGY
Unit 10: Ecology and Environment
In the equation GPP−R=NPP, R represents :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Environment factor
- B. Respiration losses
- C. Radiant energy
- D. Retardation factor
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Q126
BIOLOGY
Unit 4: Plant Physiology
The site of perception of light in plants during photoperiodism is :
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2021 (10 sets)
- A. Axillary bud
- B. Leaf
- C. Shoot apex
- D. Stem
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Q127
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is not an application of PCR (Polymerase Chain Reaction) ?
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2021 (10 sets)
- A. Purification of isolated protein
- B. Detection of gene mutation
- C. Molecular diagnosis
- D. Gene amplification
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Q128
BIOLOGY
Unit 9: Biotechnology and Its Applications
During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out :
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2021 (10 sets)
- A. Histones
- B. Polysaccharides
- C. RNA
- D. DNA
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Q129
BIOLOGY
Unit 1: Diversity in Living World
Which of the following algae contains mannitol as reserve food material ?
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2021 (10 sets)
- A. Volvox
- B. Ulothrix
- C. Ectocarpus
- D. Gracilaria
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Q130
BIOLOGY
Unit 4: Plant Physiology
Mutations in plant cells can be induced by :
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2021 (5 sets)
- A. Gamma rays
- B. Zeatin
- C. Kinetin
- D. Infrared rays
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Q131
BIOLOGY
Unit 6: Reproduction
A typical angiosperm embryo sac at maturity is :
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2021 (10 sets)
- A. 7-nucleate and 7-celled
- B. 8-nucleate and 8-celled
- C. 8-nucleate and 7-celled
- D. 7-nucleate and 8-celled
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Q132
CHEMISTRY
Unit 19: Biomolecules
Which of the following are not secondary metabolites in plants ?
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2021 (5 sets)
- A. Vinblastin, curcumin
- B. Rubber, gums
- C. Morphine, codeine
- D. Amino acids, glucose
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Q133
BIOLOGY
Unit 7: Genetics and Evolution
The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Punnett square
- B. Net square
- C. Bullet square
- D. Punch square
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Q134
BIOLOGY
Unit 3: Cell Structure and Function
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as :
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2021 (10 sets)
- A. Sub-metacentric
- B. Acrocentric
- C. Metacentric
- D. Telocentric
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Q136
BIOLOGY
Unit 9: Biotechnology and Its Applications
Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain
↻ Repeated question — also appeared in
2021 (9 sets)
- A. it will lead to lysis of host cell.
- B. it will be able to produce a novel protein with dual ability.
- C. it will not be able to confer ampicillin resistance to the host cell.
- D. the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
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Q137
BIOLOGY
Unit 7: Genetics and Evolution
What is the role of RNA polymerase III in the process of transcription in eukaryotes ?
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2021 (7 sets)
- A. Transcribes precursor of mRNA
- B. Transcribes only snRNAs
- C. Transcribes rRNAs (28S, 18S and 5.8S)
- D. Transcribes tRNA, 5s rRNA and snRNA
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Q138
BIOLOGY
Unit 10: Ecology and Environment
In the exponential growth equation Nt=Noert, e represents :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. The base of natural logarithms
- B. The base of geometric logarithms
- C. The base of number logarithms
- D. The base of exponential logarithms
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Q140
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements is incorrect ?
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2021 (10 sets)
- A. Grana lamellae have both PS I and PS II.
- B. Cyclic photophosphorylation involves both PS I and PS II.
- C. Both ATP and NADPH are synthesized during non-cyclic photophosphorylation.
- D. Stroma lamellae have PS I only and lack NADP reductase.
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Q140
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements is incorrect?
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Grana lamellae have both PS I and PS II.
- B. Cyclic photophosphorylation involves both PS I and PS II.
- C. Both ATP and NADPH + H+ are synthesized during non-cyclic photophosphorylation.
- D. Stroma lamellae have PS I only and lack NADP reductase.
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Q141
BIOLOGY
Unit 4: Plant Physiology
Match Column - I with Column - II and choose the correct option:
Column - I: (a) Nitrococcus, (b) Rhizobium, (c) Thiobacillus, (d) Nitrobacter
Column - II: (i) Denitrification, (ii) Conversion of ammonia to nitrite, (iii) Conversion of nitrite to nitrate, (iv) Conversion of atmospheric nitrogen to ammonia
- A. (1)(iii)(i)(iv)(ii)
- B. (2)(iv)(iii)(ii)(i)
- C. (3)(ii)(iv)(i)(iii)
- D. (4)(i)(ii)(iii)(iv)
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Q142
BIOLOGY
Unit 3: Cell Structure and Function
Match List - I with List - II:
List - I: (a) Protein, (b) Unsaturated fatty acid, (c) Nucleic acid, (d) Polysaccharide
List - II: (i) C=C double bonds, (ii) Phosphodiester bonds, (iii) Glycosidic bonds, (iv) Peptide bonds
- A. (1)(ii)(i)(iv)(iii)
- B. (2)(iv)(iii)(i)(ii)
- C. (3)(iv)(i)(ii)(iii)
- D. (4)(i)(iv)(iii)(ii)
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Q143
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements is correct?
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2021 (7 sets)
- A. Organisms that depend on living plants are called saprophytes.
- B. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.
- C. Fusion of two cells is called Karyogamy.
- D. Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy.
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Q144
BIOLOGY
Unit 6: Reproduction
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
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2021 (8 sets)
- A. Poaceae ; Solanaceae
- B. Rosaceae ; Leguminosae
- C. Poaceae ; Rosaceae
- D. Poaceae ; Leguminosae
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Q146
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements is incorrect?
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- A. ATP is synthesized through complex V.
- B. Oxidation-reduction reactions produce proton gradient in respiration.
- C. During aerobic respiration, role of oxygen is limited to the terminal stage.
- D. In ETC (Electron Transport Chain), one molecule of NADH+H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.
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Q147
BIOLOGY
Unit 3: Cell Structure and Function
Match List - I with List - II:
List - I: (a) S phase, (b) G2 phase, (c) Quiescent stage, (d) G1 phase
List - II: (i) Proteins are synthesized, (ii) Inactive phase, (iii) Interval between mitosis and initiation of DNA replication, (iv) DNA replication
↻ Repeated question — also appeared in
2021 (1 set)
- A. (1)(iv)(i)(ii)(iii)
- B. (2)(ii)(iv)(iii)(i)
- C. (3)(iii)(ii)(i)(iv)
- D. (4)(iv)(ii)(iii)(i)
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Q148
BIOLOGY
Unit 7: Genetics and Evolution
Identify the correct statement.
↻ Repeated question — also appeared in
2021 (9 sets)
- A. The coding strand in a transcription unit is copied to an mRNA.
- B. Split gene arrangement is characteristic of prokaryotes.
- C. In capping, methyl guanosine triphosphate is added to the 3' end of hnRNA.
- D. RNA polymerase binds with Rho factor to terminate the process of transcription in bacteria.
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Q150
BIOLOGY
Unit 7: Genetics and Evolution
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Single nucleotides
- B. Polymorphic DNA
- C. Satellite DNA
- D. Repetitive DNA
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Q151
BIOLOGY
Unit 5: Human Physiology
Erythropoietin hormone which stimulates R.B.C. formation is produced by:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. The cells of bone marrow
- B. Juxtaglomerular cells of the kidney
- C. Alpha cells of pancreas
- D. The cells of rostral adenohypophysis
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Q151
BIOLOGY
Unit 5: Human Physiology
Erythropoietin hormone which stimulates R.B.C. formation is produced by :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. The cells of bone marrow
- B. Juxtaglomerular cells of the kidney
- C. Alpha cells of pancreas
- D. The cells of rostral adenohypophysis
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Q152
BIOLOGY
Unit 1: Diversity in Living World
Which one of the following belongs to the family Muscidae ?
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2021 (9 sets)
- A. Cockroach
- B. House fly
- C. Fire fly
- D. Grasshopper
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Q153
BIOLOGY
Unit 1: Diversity in Living World
Match the following:
(a) Physalia, (b) Limulus, (c) Ancylostoma, (d) Pinctada
(i) Pearl oyster, (ii) Portuguese Man of War, (iii) Living fossil, (iv) Hookworm
↻ Repeated question — also appeared in
2021 (3 sets)
- A. (1)(ii)(iii)(iv)(i)
- B. (2)(i)(iv)(iii)(ii)
- C. (3)(iii)(ii)(i)(iv)
- D. (4)(i)(ii)(iii)(iv)
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Q153
BIOLOGY
Unit 1: Diversity in Living World
Match the following : (a) Physalia (i) Pearl oyster (b) Limulus (ii) Portuguese Man of War (c) Ancylostoma (iii) Living fossil (d) Pinctada (iv) Hookworm
↻ Repeated question — also appeared in
2021 (6 sets)
- A. (1) (ii)(iii)(iv)(i)
- B. (2) (i)(iv)(iii)(ii)
- C. (3) (ii)(iii)(i)(iv)
- D. (4) (iv)(i)(iii)(ii)
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Q154
BIOLOGY
Unit 9: Biotechnology and Its Applications
For effective treatment of the disease, early diagnosis and understanding its pathophysiology is very important. Which of the following molecular diagnostic techniques is very useful for early detection ?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. ELISA Technique
- B. Hybridization Technique
- C. Western Blotting Technique
- D. Southern Blotting Technique
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Q155
BIOLOGY
Unit 6: Reproduction
Which one of the following is an example of Hormone releasing IUD ?
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2021 (7 sets)
- A. Cu 7
- B. Multiload 375
- C. CuT
- D. LNG 20
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Q156
BIOLOGY
Unit 3: Cell Structure and Function
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature ?
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2021 (8 sets)
- A. Diakinesis
- B. Pachytene
- C. Leptotene
- D. Zygotene
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Q157
BIOLOGY
Unit 9: Biotechnology and Its Applications
With regard to insulin choose correct options. (a) C-peptide is not present in mature insulin. (b) The insulin produced by rDNA technology has C-peptide. (c) The pro-insulin has C-peptide. (d) A-peptide and B-peptide of insulin are interconnected by disulphide bridges.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. (a), (c) and (d) only
- B. (a) and (d) only
- C. (b) and (d) only
- D. (b) and (c) only
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Q158
BIOLOGY
Unit 1: Diversity in Living World
Which one of the following organisms bears hollow and pneumatic long bones ?
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2021 (9 sets)
- A. Macropus
- B. Ornithorhynchus
- C. Neophron
- D. Hemidactylus
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Q159
BIOLOGY
Unit 5: Human Physiology
Persons with ‘AB’ blood group are called as “Universal recipients”. This is due to :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Presence of antibodies, anti-A and anti-B, on RBCs
- B. Absence of antibodies, anti-A and anti-B, in plasma
- C. Absence of antigens A and B on the surface of RBCs
- D. Absence of antigens A and B in plasma
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Q160
BIOLOGY
Unit 5: Human Physiology
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins ?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Epinephrine
- B. Thrombokinase
- C. Thrombin
- D. Renin
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Q161
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following statements wrongly represents the nature of smooth muscle ?
↻ Repeated question — also appeared in
2021 (8 sets)
- A. Communication among the cells is performed by intercalated discs
- B. These muscles are present in the wall of blood vessels
- C. These muscle have no striations
- D. They are involuntary muscles
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Q162
BIOLOGY
Unit 1: Diversity in Living World
Match List - I with List - II. (a) Metamerism (i) Coelenterata (b) Canal system (ii) Ctenophora (c) Comb plates (iii) Annelida (d) Cnidoblasts (iv) Porifera
↻ Repeated question — also appeared in
2021 (7 sets)
- A. (1) (iii)(iv)(ii)(i)
- B. (2) (iv)(i)(ii)(iii)
- C. (3) (iv)(iii)(i)(ii)
- D. (4) (iii)(iv)(i)(ii)
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Q163
BIOLOGY
Unit 9: Biotechnology and Its Applications
A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Palindromic Nucleotide sequences
- B. Poly(A) tail sequences
- C. Degenerate primer sequence
- D. Okazaki sequences
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Q164
BIOLOGY
Unit 7: Genetics and Evolution
Which is the “Only enzyme” that has “Capability” to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes ?
↻ Repeated question — also appeared in
2021 (6 sets)
- A. DNA Ligase
- B. DNase
- C. DNA dependent DNA polymerase
- D. DNA dependent RNA polymerase
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Q165
BIOLOGY
Unit 8: Biology and Human Welfare
Identify the incorrect pair.
↻ Repeated question — also appeared in
2021 (5 sets)
- A. Lectins - Concanavalin A
- B. Drugs - Ricin
- C. Alkaloids - Codeine
- D. Toxin - Abrin
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Q165
BIOLOGY
Unit 1: Diversity in Living World
Identify the incorrect pair.
↻ Repeated question — also appeared in
2021 (1 set)
- A. Lectins - Concanavalin A
- B. Drugs - Ricin
- C. Alkaloids - Codeine
- D. Toxin - Abrin
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Q166
BIOLOGY
Unit 5: Human Physiology
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. pO2 = 95 and pCO2 = 40
- B. pO2 = 159 and pCO2 = 0.3
- C. pO2 = 104 and pCO2 = 40
- D. pO2 = 40 and pCO2 = 45
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Q166
BIOLOGY
Unit 5: Human Physiology
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. pO2 = 95 and pCO2 = 40
- B. pO2 = 159 and pCO2 = 0.3
- C. pO2 = 104 and pCO2 = 40
- D. pO2 = 40 and pCO2 = 45
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Q167
BIOLOGY
Unit 3: Cell Structure and Function
The organelles that are included in the endomembrane system are :
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2021 (10 sets)
- A. Golgi complex, Mitochondria, Ribosomes and Lysosomes
- B. Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
- C. Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
- D. Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles
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Q167
BIOLOGY
Unit 3: Cell Structure and Function
The organelles that are included in the endomembrane system are :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Golgi complex, Mitochondria, Ribosomes and Lysosomes
- B. Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
- C. Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
- D. Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles
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Q168
BIOLOGY
Unit 7: Genetics and Evolution
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it ?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. T : 30 ; G : 20 ; C : 20
- B. T : 20 ; G : 25 ; C : 25
- C. T : 20 ; G : 30 ; C : 20
- D. T : 20 ; G : 20 ; C : 30
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Q168
BIOLOGY
Unit 7: Genetics and Evolution
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it ?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. T : 30 ; G : 20 ; C : 20
- B. T : 20 ; G : 25 ; C : 25
- C. T : 20 ; G : 30 ; C : 20
- D. T : 20 ; G : 20 ; C : 30
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Q169
BIOLOGY
Unit 10: Ecology and Environment
Dobson units are used to measure thickness of :
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2021 (10 sets)
- A. Ozone
- B. Troposphere
- C. CFCs
- D. Stratosphere
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Q169
BIOLOGY
Unit 10: Ecology and Environment
Dobson units are used to measure thickness of :
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2021 (10 sets)
- A. Ozone
- B. Troposphere
- C. CFCs
- D. Stratosphere
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Q170
BIOLOGY
Unit 1: Diversity in Living World
Read the following statements. (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c) Round worms have organ-system level of body organization. (d) Comb plates present in ctenophores help in digestion. (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. (a), (d) and (e) are correct
- B. (b), (c) and (e) are correct
- C. (c), (d) and (e) are correct
- D. (a), (b) and (c) are correct
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Q171
BIOLOGY
Unit 5: Human Physiology
Chronic auto immune disorder affecting neuro muscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Myasthenia gravis
- B. Gout
- C. Arthritis
- D. Muscular dystrophy
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Q172
BIOLOGY
Unit 6: Reproduction
Match List - I with List - II. (a) Vaults (i) Entry of sperm through Cervix is blocked (b) IUDs (ii) Removal of Vas deferens (c) Vasectomy (iii) Phagocytosis of sperms within the Uterus (d) Tubectomy (iv) Removal of fallopian tube
↻ Repeated question — also appeared in
2021 (6 sets)
- A. (ii)(iv)(iii)(i)
- B. (iii)(i)(iv)(ii)
- C. (iv)(ii)(i)(iii)
- D. (i)(iii)(ii)(iv)
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Q173
BIOLOGY
Unit 3: Cell Structure and Function
The centriole undergoes duplication during :
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2021 (9 sets)
- A. Metaphase
- B. G2 phase
- C. S-phase
- D. Prophase
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Q174
BIOLOGY
Unit 6: Reproduction
Receptors for sperm binding in mammals are present on :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Perivitelline space
- B. Zona pellucida
- C. Corona radiata
- D. Vitelline membrane
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Q175
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following characteristics is incorrect with respect to cockroach ?
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2021 (9 sets)
- A. In females, 7th-9th sterna together form a genital pouch.
- B. 10th abdominal segment in both sexes, bears a pair of anal cerci.
- C. A ring of gastric caeca is present at the junction of midgut and hind gut.
- D. Hypopharynx lies within the cavity enclosed by the mouth parts.
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Q176
BIOLOGY
Unit 8: Biology and Human Welfare
Match List - I with List - II. (a) Aspergillus niger (i) Acetic Acid (b) Acetobacter aceti (ii) Lactic Acid (c) Clostridium butylicum (iii) Citric Acid (d) Lactobacillus (iv) Butyric Acid
↻ Repeated question — also appeared in
2021 (7 sets)
- A. (ii)(iii)(i)(iv)
- B. (iv)(ii)(i)(iii)
- C. (iii)(i)(iv)(ii)
- D. (i)(ii)(iii)(iv)
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Q177
BIOLOGY
Unit 5: Human Physiology
Veneral diseases can spread through : (a) Using sterile needles (b) Transfusion of blood from infected person (c) Infected mother to foetus (d) Kissing (e) Inheritance
↻ Repeated question — also appeared in
2021 (5 sets)
- A. (b) and (c) only
- B. (a) and (c) only
- C. (a), (b) and (c) only
- D. (b), (c) and (d) only
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Q178
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following RNAs is not required for the synthesis of protein ?
↻ Repeated question — also appeared in
2021 (5 sets)
- A. rRNA
- B. siRNA
- C. mRNA
- D. tRNA
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Q179
BIOLOGY
Unit 5: Human Physiology
Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.
↻ Repeated question — also appeared in
2021 (9 sets)
- A. High pO2, high pCO2, less H+, higher temperature
- B. Low pO2, low pCO2, more H+, higher temperature
- C. High pO2, low pCO2, less H+, lower temperature
- D. Low pO2, high pCO2, more H+, higher temperature
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