Q1
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
- C. (R1/R2)^2
- D. (R2/R1)^2
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Q2
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. Mg/2
- B. Mg
- C. 3Mg/2
- D. 2Mg
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Q3
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An infinitely long straight conductor carries a current of 5 A as shown. 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. 4 × 10^–20 N
- B. 8π × 10^–20 N
- C. 4π × 10^–20 N
- D. 8 × 10^–20 N
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Q4
PHYSICS
Unit 11: Electrostatics
A dipole is placed in an electric field as shown. In which direction will it move?
↻ Repeated question — also appeared in
2021 (4 sets)
- A. Towards the left as its potential energy will increase.
- B. Towards the right as its potential energy will decrease.
- C. Towards the left as its potential energy will decrease.
- D. Towards the right as its potential energy will increase.
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Q5
PHYSICS
Unit 16: Optics
A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since
↻ Repeated question — also appeared in
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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Q6
PHYSICS
Unit 20: Experimental Skills
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
↻ Repeated question — also appeared in
2021 (3 sets)
- A. 0.52 cm
- B. 0.026 cm
- C. 0.26 cm
- D. 0.052 cm
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Q7
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. 0.9 MeV
- B. 9.4 MeV
- C. 804 MeV
- D. 216 MeV
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Q8
PHYSICS
Unit 2: Kinematics
A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let S(n) be the distance travelled by the block in the interval t = n - 1 to t = n. Then, the ratio S(n) / S(n+1) is
↻ Repeated question — also appeared in
2021 (8 sets)
- A. (2n - 1) / 2n
- B. (2n - 1) / (2n + 1)
- C. (2n + 1) / (2n - 1)
- D. 2 / (2n - 1)
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Q9
PHYSICS
Unit 16: Optics
Find the value of the angle of emergence from the prism. Refractive index of the glass is sqrt(3).
↻ Repeated question — also appeared in
2021 (1 set)
- A. 60°
- B. 30°
- C. 45°
- D. 90°
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Q10
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 (12 sets)
- A. 0.0628 s
- B. 6.28 s
- C. 3.14 s
- D. 0.628 s
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Q11
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. 25
- B. 15
- C. 50
- D. 30
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Q12
PHYSICS
Unit 12: Current Electricity
Match Column-I (physical terms) with Column-II (mathematical relations):
Column-I: (A) Drift Velocity, (B) Electrical Resistivity, (C) Relaxation Period, (D) Current Density
Column-II: (P) m/ne²τ, (Q) nevd, (R) eEτ/m, (S) E/J
↻ Repeated question — also appeared in
2021 (1 set)
- A. (A) - (R), (B) - (S), (C) - (P), (D) - (Q)
- B. (A) - (R), (B) - (S), (C) - (Q), (D) - (P)
- C. (A) - (R), (B) - (P), (C) - (S), (D) - (Q)
- D. (A) - (R), (B) - (Q), (C) - (S), (D) - (P)
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Q13
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 (10 sets)
- A. Current in n-type = current in p-type
- B. Current in p-type > current in n-type
- C. Current in n-type > current in p-type
- D. No current will flow in p-type, current will only flow in n-type
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Q14
PHYSICS
Unit 18: Atoms and Nuclei
A radioactive nucleus A/Z X undergoes spontaneous decay in the sequence A/Z X -> A-4/Z-2 B -> A-4/Z-3 C -> A-4/Z-4 D. The possible decay particles in the sequence are:
↻ Repeated question — also appeared in
2021 (1 set)
- A. α, β-, β+
- B. α, β+, β-
- C. β+, α, β-
- D. β-, α, β+
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Q15
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. 10.2 kW
- B. 8.1 kW
- C. 12.3 kW
- D. 7.0 kW
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Q16
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
The number of photons per second emitted by a 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 J s):
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 10^18
- B. 10^17
- C. 10^16
- D. 10^15
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Q16
PHYSICS
Unit 18: Atoms and Nuclei
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 J s)
- A. 10¹⁸
- B. 10¹⁷
- C. 10¹⁶
- D. 10¹⁵
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Q17
PHYSICS
Unit 15: Electromagnetic Waves
For a plane electromagnetic wave propagating in x-direction, which one of the following combinations gives the correct possible directions for electric field (E) and magnetic field (B) respectively?
↻ Repeated question — also appeared in
2021 (3 sets)
- A. j, j
- B. -j, -k
- C. j, -k
- D. -j, k
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Q18
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 (11 sets)
- A. 0.25 Ω
- B. 0.5 Ω
- C. 1 Ω
- D. 4 Ω
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Q19
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 (10 sets)
- A. 60 cm
- B. 21.6 cm
- C. 64 cm
- D. 62 cm
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Q20
PHYSICS
Unit 11: Electrostatics
Polar molecules are the molecules
↻ Repeated question — also appeared in
2021 (11 sets)
- A. Having zero dipole moment
- B. Acquire a dipole moment only in the presence of electric field due to displacement of charges
- C. Acquire a dipole moment only when magnetic field is absent
- D. Having a permanent electric dipole moment
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Q21
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 E²
- B. ε₀ EAd
- C. 1/2 ε₀ E²Ad
- D. ε₀ E²Ad
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Q22
PHYSICS
Unit 11: Electrostatics
The equivalent capacitance of the combination shown in the figure is
- A. 3C
- B. 2C
- C. C/2
- D. 3/2 C
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Q23
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) and (B) both are correct.
- B. (A) and (B) both are incorrect
- C. (A) is correct and (B) is incorrect.
- D. (A) is incorrect but (B) is correct.
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Q24
PHYSICS
Unit 6: Gravitation
A particle is released from height S from the surface of the Earth. At a certain height its kinetic energy is three times its potential energy. The height from the surface of earth and the speed of the particle at that instant are respectively
↻ Repeated question — also appeared in
2021 (1 set)
- A. S/3, 4gS/2
- B. S/3, 4gS
- C. S/3, 2gS
- D. S/4, sqrt(3gS/2)
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Q25
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^2] [L^-1] [T^0]
- B. [M] [L^-1] [T^-1]
- C. [M] [L^0] [T^0]
- D. [M^2] [L^-2] [T^-1]
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Q26
PHYSICS
Unit 9: Kinetic Theory of Gases
Match Column - I and Column - II and choose the correct match from the given choices.
Column I: (A) Root mean square speed of gas molecules, (B) Pressure exerted by ideal gas, (C) Average kinetic energy of a molecule, (D) Total internal energy of 1 mole of a diatomic gas
Column II: (P) 1/3 nmv^2, (Q) sqrt(3RT/M), (R) 5/2 RT, (S) 3/2 kBT
- A. (A) - (R), (B) - (P), (C) - (S), (D) - (Q)
- B. (A) - (Q), (B) - (R), (C) - (S), (D) - (P)
- C. (A) - (Q), (B) - (P), (C) - (S), (D) - (R)
- D. (A) - (R), (B) - (Q), (C) - (P), (D) - (S)
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Q27
PHYSICS
Unit 10: Oscillations and Waves
A body is executing simple harmonic motion with frequency 'n', the frequency of its potential energy is
↻ Repeated question — also appeared in
2021 (11 sets)
- A. n
- B. 2n
- C. 3n
- D. 4n
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Q28
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 (6 sets)
- A. 13/10 t
- B. 13/5 t
- C. 10/13 t
- D. 5/13 t
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Q29
PHYSICS
Unit 12: Current Electricity
A capacitor of capacitance 'C', is connected across an ac source of voltage V, given by V = V0 sin(wt). The displacement current between the plates of the capacitor, would then be given by
↻ Repeated question — also appeared in
2021 (4 sets)
- A. Id = V0 wC cos(wt)
- B. Id = V0 / (wC) cos(wt)
- C. Id = V0 / (wC) sin(wt)
- D. Id = V0 wC sin(wt)
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Q30
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 (12 sets)
- A. 1/2
- B. 1/(2^(3/2))
- C. 2/3
- D. 2/(3^2)
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Q31
PHYSICS
Unit 12: Current Electricity
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:
- A. 42Ω
- B. 5/√2 Ω
- C. 4Ω
- D. 5Ω
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Q32
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. Plot A
- B. Plot B
- C. Plot C
- D. Plot D
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Q33
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electromagnetic wave of wavelength 'λ' is incident on a photosensitive surface of negligible work function. If 'm' is the mass of photoelectron emitted from the surface and has de-Broglie wavelength λd, then:
↻ Repeated question — also appeared in
2021 (3 sets)
- A. λ = λd^2 (2mc/h)
- B. λ = λd^2 (mc/h)
- C. λ = λd^2 (mc/h) * constant (rearranged)
- D. λ = λd^2 (h/mc)
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Q34
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:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. v
- B. 2v
- C. 3v
- D. 4v
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Q35
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 (11 sets)
- A. [F][A][T]
- B. [F][A][T^2]
- C. [F][A][T^-1]
- D. [F][A^-1][T]
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Q36
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/R1
- C. R1^2/R2
- D. R2^2/R1
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Q37
PHYSICS
Unit 16: Optics
A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of
↻ Repeated question — also appeared in
2021 (6 sets)
- A. 20 cm from the lens, it would be a real image
- B. 30 cm from the lens, it would be a real image
- C. 30 cm from the plane mirror, it would be a virtual image
- D. 20 cm from the plane mirror, it would be a virtual image
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Q38
PHYSICS
Unit 12: Current Electricity
Three resistors having resistances r1, r2 and r3 are connected as shown in the given circuit. The ratio i3/i1 of currents in terms of resistances used in the circuit is
↻ Repeated question — also appeared in
2021 (2 sets)
- A. r1 / (r2 + r3)
- B. r2 / (r2 + r3)
- C. r1 / (r1 + r2)
- D. r2 / (r1 + r3)
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Q39
PHYSICS
Unit 19: Electronic Devices
For the given circuit, the input digital signals are applied at the terminals A, B and C. What would be the output at the terminal y?
- A. t1 to t6 pulse graph 1
- B. 5 V / 0 V pulse graph 2
- C. 5 V
- D. 5 V / 0 V pulse graph 4
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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. 25 rad/s and 75 rad/s
- B. 50 rad/s and 25 rad/s
- C. 46 rad/s and 54 rad/s
- D. 42 rad/s and 58 rad/s
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Q41
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 m/s, 5 m/s²
- B. 20 m/s, 0
- C. 20√2 m/s, 0
- D. 20√2 m/s, 10 m/s²
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Q42
PHYSICS
Unit 6: Gravitation
A particle of mass 'm' is projected with a velocity v = kVe (k < 1) from the surface of the earth. (Ve = escape velocity). The maximum height above the surface reached by the particle is
↻ Repeated question — also appeared in
2021 (8 sets)
- A. k²R / (1 - k²)
- B. k²R / (1 + k²)
- C. Rk² / k
- D. Rk² / (1 - k²)
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Q43
PHYSICS
Unit 2: Kinematics
A particle moving in a circle of radius R with a uniform speed takes a time T to complete one revolution. If this particle were projected with the same speed at an angle 'θ' to the horizontal, the maximum height attained by it equals 4R. The angle of projection, θ, is then given by:
↻ Repeated question — also appeared in
2021 (1 set)
- A. cos^(-1) [ (1/2) * (gT^2 / (π^2 * R)) ]
- B. cos^(-1) [ (1/2) * (π * R / gT) ]
- C. sin^(-1) [ (1/2) * (π * R / gT) ]
- D. sin^(-1) [ (1/2) * (2 * gT^2 / (π^2 * R)) ]
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Q44
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
In the product F = q(v x B), where v = (i + 2j + 4k) and F = (4i - 20j + 12k). What will be the complete expression for B?
↻ Repeated question — also appeared in
2021 (2 sets)
- A. (-8i - 8j + 6k)
- B. (-6i - 6j + 8k)
- C. (8i + 8j - 6k)
- D. (6i + 6j - 8k)
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Q45
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 (8 sets)
- A. 0 kg m/s
- B. 4.2 kg m/s
- C. 2.1 kg m/s
- D. 1.4 kg m/s
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Q46
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', and (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. 3Ia^2 and 3 Ia^2
- B. 3Ia^2 and Ia^2
- C. 3Ia^2 and 4 Ia^2
- D. 4Ia^2 and 3Ia^2
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Q47
PHYSICS
Unit 11: Electrostatics
Twenty seven drops of same size are charged at 200 V each. They combine to form a bigger drop. Calculate the potential of the bigger potential of the bigger drop.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 660 V
- B. 1320 V
- C. 1520 V
- D. 1980 V
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Q48
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/s^2)
↻ Repeated question — also appeared in
2021 (2 sets)
- A. 1/2 kg
- B. 1/3 kg
- C. 1/6 kg
- D. 1/12 kg
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Q49
PHYSICS
Unit 5: Rotational Motion
From a circular ring of mass 'M' and radius 'R' an arc corresponding to a 90° sector is removed. The moment of inertia of the remaining part of the ring about an axis passing through the centre of the ring and perpendicular to the plane of the ring is 'K' times 'MR^2'. Then the value of 'K' is
↻ Repeated question — also appeared in
2021 (6 sets)
- A. 3/4
- B. 7/8
- C. 1/4
- D. 1/8
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Q50
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. 0.2 A
- B. 0.4 A
- C. 2 A
- D. 4 A
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Q51
CHEMISTRY
Unit 15: Hydrocarbons
Dihedral angle of least stable conformer of ethane is :
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 120°
- B. 180°
- C. 60°
- D. 0°
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Q52
CHEMISTRY
Unit 10: p-Block Elements
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Noble gases are sparingly soluble in water
- B. Noble gases have very high melting and boiling points
- C. Noble gases have weak dispersion forces
- D. Noble gases have large positive values of electron gain enthalpy
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Q53
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
The major product of the following chemical reaction is : (CH3)2CH-CH=CH2 + HBr (in presence of (C6H5CO)2O2)
- A. (CH3)2CH-CH2-CH2Br
- B. Image not provided
- C. (CH3)2CH-CHBr-CH3
- D. (CH3)2CBr-CH2-CH3
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Q54
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]
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 219.3 m
- B. 219.2 m
- C. 2192 m
- D. 21.92 cm
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Q55
CHEMISTRY
Unit 11: d- and f-Block Elements
The incorrect statement among the following is :
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2021 (11 sets)
- A. Actinoid contraction is greater for element to element than lanthanoid contraction
- B. Most of the trivalent Lanthanoid ions are colorless in the solid state
- C. Lanthanoids are good conductors of heat and electricity
- D. Actinoids are highly reactive metals, especially when finely divided.
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Q56
PHYSICS
Unit 7: Properties of Solids and Liquids
Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:
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2021 (8 sets)
- A. 8, 4
- B. 6, 12
- C. 2, 1
- D. 12, 6
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Q57
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.
- A. CH3CH2NO2
- B. CH3CH2NHCH3
- C. CH3CH2NH2
- D. CH3CH2CH2CH2CH3
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Q58
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. 2KClO3 → 2KCl + 3O2
- B. Cr2O3 + 2Al → Al2O3 + 2Cr
- C. Fe + 2HCl → FeCl2 + H2
- D. 2Pb(NO3)2 → 2PbO + 4NO2 + O2
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Q59
CHEMISTRY
Unit 19: Biomolecules
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.
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2021 (3 sets)
- A. Both Statement I and Statement II are true
- B. Both Statement I and Statement II are false
- C. Statement I is correct but Statement II is false
- D. Statement I is incorrect but Statement II is true.
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Q60
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+
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2021 (5 sets)
- A. 2-methylpropan-2-ol
- B. pentan-2-ol
- C. pentan-3-ol
- D. 2-methylbutan-2-ol
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Q61
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
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.
- A. Both statement I and Statement II are true
- B. Both statement I and Statement II are false
- C. Statement I is correct but statement II is false
- D. Statement I is incorrect but Statement II is true
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Q61
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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2021 (5 sets)
- A. Both statement I and Statement II are true
- B. Both Statement I and Statement II are false
- C. Statement I is correct but statement II is false
- D. Statement I is incorrect but Statement II is true
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Q62
PHYSICS
Unit 8: 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 + Cv = R
- B. Cp - Cv = R
- C. Cp = RCv
- D. Cv = RCp
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Q62
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 + CV = R
- B. CP - CV = R
- C. CP = RCV
- D. CV = RCP
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Q63
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Match List-I with List-II.
List-I (Molecule) | List-II (Shape)
(a) PCl5 | (i) Square pyramidal
(b) SF6 | (ii) Trigonal planar
(c) BrF5 | (iii) Octahedral
(d) BF3 | (iv) Trigonal bipyramidal
Choose the correct answer from the options given below.
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2021 (1 set)
- A. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
- B. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- C. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- D. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
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Q64
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 > P1 > P3
- B. P1 > P2 > P3
- C. P2 > P3 > P1
- D. P3 > P1 > P2
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Q65
CHEMISTRY
Unit 11: d- and f-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. Electrolysis
- B. Chromatography
- C. Distillation
- D. Zone refining
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Q66
CHEMISTRY
Unit 2: Atomic Structure
Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
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- A. Beta (β-)
- B. Alpha (α)
- C. Gamma (γ)
- D. Neutron (n)
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Q67
PHYSICS
Unit 7: Properties of Solids and Liquids
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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2021 (7 sets)
- A. 7
- B. 5
- C. 2
- D. 3
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Q68
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?
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2021 (10 sets)
- A. Saytzeff's Rule
- B. Hund's Rule
- C. Hofmann Rule
- D. Huckel's Rule
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Q69
CHEMISTRY
Unit 11: d- and f-Block Elements
The maximum temperature that can be achieved in blast furnace is:
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- A. Upto 1200 K
- B. Upto 2200 K
- C. Upto 1900 K
- D. Upto 5000 K
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Q70
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:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. 201.28 S cm^2 mol^–1
- B. 390.71 S cm^2 mol^–1
- C. 698.28 S cm^2 mol^–1
- D. 540.48 S cm^2 mol^–1
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Q71
CHEMISTRY
Unit 12: Coordination Compounds
Ethylene diaminetetraacetate (EDTA) ion is :
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- A. Hexadentate ligand with four O and two N donor atoms
- B. Unidentate ligand
- C. Bidentate ligand with two N donor atoms
- D. Tridentate ligand with three N donor atoms
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Q72
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
The structures of beryllium chloride in solid state and vapour phase, are :
- A. Chain and dimer, respectively
- B. Linear in both
- C. Dimer and Linear, respectively
- D. Chain in both
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Q74
CHEMISTRY
Unit 5: Solutions
The right option for the statement 'Tyndall effect is exhibited by', is :
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- A. NaCl solution
- B. Glucose solution
- C. Starch solution
- D. Urea solution
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Q75
CHEMISTRY
Unit 19: Biomolecules
Which one of the following polymers is prepared by addition polymerisation?
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- A. Teflon
- B. Nylon-66
- C. Novolac
- D. Dacron
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Q76
CHEMISTRY
Unit 19: Biomolecules
The RBC deficiency is deficiency disease of :
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- A. Vitamin B12
- B. Vitamin B6
- C. Vitamin B1
- D. Vitamin B2
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Q77
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
The correct sequence of bond enthalpy of 'C—X' bond is :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. CH3—F < CH3—Cl < CH3—Br < CH3—I
- B. CH3—F > CH3—Cl > CH3—Br > CH3—I
- C. CH3—F < CH3—Cl < CH3—Br > CH3—I
- D. CH3—Cl > CH3—F > CH3—Br > CH3—I
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Q77
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The correct sequence of bond enthalpy of 'C—X' bond is :
- A. CH3—F < CH3—Cl < CH3—Br < CH3—I
- B. CH3—F > CH3—Cl > CH3—Br > CH3—I
- C. CH3—F < CH3—Cl < CH3—Br > CH3—I
- D. CH3—Cl > CH3—F > CH3—Br > CH3—I
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Q78
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. CH
- B. CH2
- C. CH3
- D. CH4
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Q79
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. Calcium chloride
- B. Strontium chloride
- C. Magnesium chloride
- D. Beryllium chloride
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Q80
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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- A. sp3 and 4
- B. sp3 and 6
- C. sp2 and 6
- D. sp2 and 8
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Q81
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 (9 sets)
- A. 8.50
- B. 5.50
- C. 7.75
- D. 6.25
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Q82
PHYSICS
Unit 9: Kinetic Theory of Gases
Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures :
- A. Graph with curves having 600K highest, 200K lowest
- B. Graph with all temperatures overlapping
- C. Graph with 200K highest, 600K lowest
- D. Graph with 600K highest, 400K middle, 200K lowest (rectangular hyperbolas)
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Q83
CHEMISTRY
Unit 8: Chemical Kinetics
For a reaction A -> B, enthalpy of reaction is -4.2 kJ mol-1 and enthalpy of activation is 9.6 kJ mol-1. The correct potential energy profile for the reaction is shown in option.
- A. PE profile showing higher product level
- B. PE profile showing lower product level (exothermic) with activation barrier
- C. PE profile showing higher product level
- D. PE profile showing flat level
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Q84
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The compound which shows metamerism is :
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- A. C5H12
- B. C3H8O
- C. C3H6O
- D. C4H10O
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Q85
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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- A. Belonging to same group
- B. Diagonal relationship
- C. Lanthanoid contraction
- D. Having similar chemical properties
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Q86
CHEMISTRY
Unit 12: Coordination Compounds
Match List-I with List-II.
List-I List-II
(a) [Fe(CN)6]3– (i) 5.92 BM
(b) [Fe(H2O)6]3+ (ii) 0 BM
(c) [Fe(CN)6]4– (iii) 4.90 BM
(d) [Fe(H2O)6]2+ (iv) 1.73 BM
Choose the correct answer from the options given below.
- A. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
- B. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
- C. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
- D. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
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Q88
CHEMISTRY
Unit 2: Atomic Structure
From the following pairs of ions which one is not an iso-electronic pair?
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- A. O2–, F–
- B. Na+, Mg2+
- C. Mn2+, Fe3+
- D. Fe2+, Mn2+
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Q89
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. 41.5 kJ mol^-1
- B. 83.0 kJ mol^-1
- C. 166 kJ mol^-1
- D. -83 kJ mol^-1
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Q90
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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Q91
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. HF < HCl < HBr < HI : Increasing acidic strength
- B. H2O < H2S < H2Se < H2Te : Increasing pKa values
- C. NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
- D. CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing power
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Q93
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. 160 mm of Hg
- B. 168 mm of Hg
- C. 336 mm of Hg
- D. 350 mm of Hg
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Q94
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductivity of 0.007 M acetic acid is 20 S cm^2 mol^-1. What is the dissociation constant of acetic acid? Choose the correct option.
- A. 1.75 * 10^-4 mol L^-1
- B. 2.50 * 10^-4 mol L^-1
- C. 1.75 * 10^-5 mol L^-1
- D. 2.50 * 10^-5 mol L^-1
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Q94
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductivity of 0.007 M acetic acid is 20 S cm^2 mol^–1. What is the dissociation constant of acetic acid? Given: Λ°_m(H^+) = 350 S cm^2 mol^–1 and Λ°_m(CH3COO^-) = 50 S cm^2 mol^–1.
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 1.75 * 10^-4 mol L^-1
- B. 2.50 * 10^-4 mol L^-1
- C. 1.75 * 10^-5 mol L^-1
- D. 2.50 * 10^-5 mol L^-1
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Q95
CHEMISTRY
Unit 15: Hydrocarbons
Consider the reaction: CH3CH2COO^- Na^+ + NaOH, [?] -> Heat -> CH3CH3 + Na2CO3. Identify the missing reagent.
↻ Repeated question — also appeared in
2021 (1 set)
- A. B2H6
- B. Red Phosphorus
- C. CaO
- D. DIBAL-H
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Q96
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Match List-I with List-II: (a) CO, HCl, Anhyd. AlCl3/CuCl -> (i) Hell-Volhard-Zelinsky, (b) R-CO-CH3 + NaOX -> (ii) Gattermann-Koch, (c) R-CH2-OH + R'COOH, Conc. H2SO4 -> (iii) Haloform, (d) R-CH2-COOH (i) X2/Red P (ii) H2O -> (iv) Esterification.
- A. (1) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
- B. (2) (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
- C. (3) (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
- D. (4) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
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Q97
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The product formed in the reaction: CH3CH2-CO-OCH3 + NaBH4 / C2H5OH -> ?
- A. CH3CH(OH)-CO-OCH3
- B. CH3CH2-CH2-OH
- C. CH3CH(OH)-CH2-OH
- D. CH3CH2-CH(OH)-OCH3
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Q98
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following molecules is non-polar in nature?
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- A. POCl3
- B. CH2O
- C. SbCl5
- D. NO2
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Q99
BIOLOGY
Unit 10: Ecology and Environment
Match List-I with List-II: (a) 2SO2 + O2 -> 2SO3, (b) HOCl -> OH + Cl, (c) CaCO3 + H2SO4 -> CaSO4 + H2O + CO2, (d) NO2 -> NO + O.
- A. (1) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
- B. (2) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- C. (3) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
- D. (4) (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
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Q100
PHYSICS
Unit 9: Kinetic Theory of Gases
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. [R = 0.082 L atm mol–1 K–1, T = 273 K]
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 2.518
- B. 2.602
- C. 25.18
- D. 26.02
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Q100
CHEMISTRY
Unit 5: Solutions
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. [Given R = 0.082 L atm mol⁻¹ K⁻¹]
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2021 (1 set)
- A. 2.518
- B. 2.602
- C. 25.18
- D. 26.02
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Q101
BIOLOGY
Unit 6: Reproduction
Which of the following plants is monoecious?
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- A. Carica papaya
- B. Chara
- C. Marchantia polymorpha
- D. Cycas circinalis
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Q102
BIOLOGY
Unit 6: Reproduction
A typical angiosperm embryo sac at maturity is:
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- A. 8-nucleate and 7-celled
- B. 7-nucleate and 8-celled
- C. 7-nucleate and 7-celled
- D. 8-nucleate and 8-celled
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Q103
BIOLOGY
Unit 1: Diversity in Living World
Gemmae are present in
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- A. Mosses
- B. Pteridophytes
- C. Some Gymnosperms
- D. Some Liverworts
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Q104
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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- A. Metacentric
- B. Telocentric
- C. Sub-metacentric
- D. Acrocentric
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Q105
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following stages of meiosis involves division of centromere?
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- A. Metaphase I
- B. Metaphase II
- C. Anaphase II
- D. Telophase II
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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. Pyruvic acid
- B. Oxaloacetic acid
- C. Succinic acid
- D. Phosphoglyceric acid
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Q107
BIOLOGY
Unit 7: Genetics and Evolution
The factor that leads to Founder effect in a population is:
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- A. Natural selection
- B. Genetic recombination
- C. Mutation
- D. Genetic drift
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Q108
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is an incorrect statement?
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- A. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles
- B. Microbodies are present both in plant and animal cells
- C. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm
- D. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm
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Q109
BIOLOGY
Unit 10: Ecology and Environment
Amensalism can be represented as:
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- A. Species A (–); Species B (0)
- B. Species A (+); Species B (+)
- C. Species A (–); Species B (–)
- D. Species A (+); Species B (0)
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Q110
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. Climax
- B. Climax community
- C. Standing state
- D. Standing crop
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Q111
BIOLOGY
Unit 1: Diversity in Living World
Which of the following algae contains mannitol as reserve food material?
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- A. Ectocarpus
- B. Gracilaria
- C. Volvox
- D. Ulothrix
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Q112
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. Resource partitioning
- B. Competitive release
- C. Mutualism
- D. Predation
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Q113
BIOLOGY
Unit 1: Diversity in Living World
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Homosorus
- B. Heterosorus
- C. Homosporous
- D. Heterosporous
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Q114
BIOLOGY
Unit 4: Plant Physiology
The site of perception of light in plants during photoperiodism is
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2021 (10 sets)
- A. Shoot apex
- B. Stem
- C. Axillary bud
- D. Leaf
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Q115
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
↻ Repeated question — also appeared in
2021 (11 sets)
- A. Elasticity
- B. Flexibility
- C. Plasticity
- D. Maturity
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Q118
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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2021 (10 sets)
- A. Yellow bands
- B. Bright orange bands
- C. Dark red bands
- D. Bright blue bands
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Q119
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 (10 sets)
- A. Xenogamy
- B. Geitonogamy
- C. Chasmogamy
- D. Cleistogamy
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Q120
BIOLOGY
Unit 1: Diversity in Living World
Which of the following algae produce Carrageen?
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2021 (10 sets)
- A. Green algae
- B. Brown algae
- C. Red algae
- D. Blue-green algae
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Q121
BIOLOGY
Unit 10: Ecology and Environment
Which of the following statements is not correct?
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2021 (10 sets)
- A. Pyramid of biomass in sea is generally inverted.
- B. Pyramid of biomass in sea is generally upright.
- C. Pyramid of energy is always upright.
- D. Pyramid of numbers in a grassland ecosystem is upright.
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Q122
BIOLOGY
Unit 10: Ecology and Environment
In the equation GPP – R = NPP, R represents:
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2021 (9 sets)
- A. Radiant energy
- B. Retardation factor
- C. Environmental factor
- D. Respiration losses
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Q123
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Diadelphous stamens are found in:
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2021 (11 sets)
- A. China rose
- B. Citrus
- C. Pea
- D. China rose and citrus
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Q124
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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2021 (10 sets)
- A. Biopiracy
- B. Gene therapy
- C. Molecular diagnosis
- D. Safety testing
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Q125
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Match List-I with List-II:
List-I: (a) Lenticels (b) Cork cambium (c) Secondary cortex (d) Cork
List-II: (i) Phellogen (ii) Suberin deposition (iii) Exchange of gases (iv) Phelloderm
- A. (1) (iv) (i) (iii) (ii)
- B. (2) (iii) (i) (iv) (ii)
- C. (3) (ii) (iii) (iv) (i)
- D. (4) (iv) (ii) (i) (iii)
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Q126
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 :
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2021 (10 sets)
- A. Bullet square
- B. Punch square
- C. Punnett square
- D. Net square
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Q127
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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2021 (10 sets)
- A. Denaturation, Annealing, Extension
- B. Denaturation, Extension, Annealing
- C. Extension, Denaturation, Annealing
- D. Annealing, Denaturation, Extension
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Q128
BIOLOGY
Unit 4: Plant Physiology
Mutations in plant cells can be induced by:
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2021 (5 sets)
- A. Kinetin
- B. Infrared rays
- C. Gamma rays
- D. Zeatin
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Q129
BIOLOGY
Unit 9: Biotechnology and Its Applications
Match List-I with List-II:
List-I: (a) Protoplast fusion (b) Plant tissue culture (c) Meristem culture (d) Micropropagation
List-II: (i) Pomato (ii) Totipotency (iii) Somaclones (iv) Virus free plants
- A. (1) (iii) (iv) (ii) (i)
- B. (2) (ii) (i) (iv) (iii)
- C. (3) (iii) (iv) (i) (ii)
- D. (4) (iv) (iii) (ii) (i)
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Q130
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 (11 sets)
- A. RNA
- B. DNA
- C. Histones
- D. Polysaccharides
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Q131
BIOLOGY
Unit 7: Genetics and Evolution
Complete the flow chart on central dogma: DNA --(a)--> DNA --(b)--> mRNA --(c)--> (d)
- A. (a)-Replication; (b)-Transcription; (c)-Transduction; (d)-Protein
- B. (a)-Translation; (b)-Replication; (c)-Transcription;(d)-Transduction
- C. (a)-Replication; (b)-Transcription; (c)-Translation; (d)-Protein
- D. (a)-Transduction; (b)-Translation; (c)-Replication; (d)-Protein
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Q132
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. Molecular diagnosis
- B. Gene amplification
- C. Purification of isolated protein
- D. Detection of gene mutation
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Q133
BIOLOGY
Unit 4: Plant Physiology
The plant hormone used to destroy weeds in a field is:
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2021 (10 sets)
- A. IAA
- B. NAA
- C. 2, 4-D
- D. IBA
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Q135
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following are not secondary metabolites in plants?
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2021 (6 sets)
- A. Morphine, codeine
- B. Amino acids, glucose
- C. Vinblastin, curcumin
- D. Rubber, gums
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Q136
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements is incorrect?
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2021 (10 sets)
- A. During aerobic respiration, role of oxygen is limited to the terminal stage
- B. 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
- C. ATP is synthesized through complex V
- D. Oxidation-reduction reactions produce proton gradient in respiration
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Q137
BIOLOGY
Unit 4: Plant Physiology
Match Column-I with Column-II and choose the correct answer from options given below:
Column-I:
(a) Nitrococcus
(b) Thiobacillus
(c) Nitrobacter
(d) Rhizobium
Column-II:
(i) Conversion of ammonia to nitrite
(ii) Denitrification
(iii) Conversion of nitrite to nitrate
(iv) Conversion of atmospheric nitrogen to ammonia
- A. (1) (ii) (iv) (i) (iii)
- B. (2) (i) (ii) (iii) (iv)
- C. (3) (iii) (i) (iv) (ii)
- D. (4) (iv) (iii) (ii) (i)
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Q138
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Match Column-I with Column-II. Select the correct answer from the options given below:
Column-I:
(a) % K(5) C 1+2+(2) A(9)+1 G1
(b) K(5) C(5) A5 G(2)
(c) P3+3 A3+3 G(3)
(d) K2+2 C4 A2-4 G(2)
Column-II:
(i) Brassicaceae
(ii) Liliaceae
(iii) Fabaceae
(iv) Solanaceae
- A. (1) (iii) (iv) (ii) (i)
- B. (2) (i) (ii) (iii) (iv)
- C. (3) (ii) (iii) (iv) (i)
- D. (4) (iv) (ii) (i) (iii)
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Q139
BIOLOGY
Unit 7: Genetics and Evolution
Identify the correct statement.
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2021 (9 sets)
- A. In capping, methyl guanosine triphosphate is added to the 3' end of hnRNA
- B. RNA polymerase binds with Rho factor to terminate the process of transcription in bacteria
- C. The coding strand in a transcription unit is copied to an mRNA
- D. Split gene arrangement is characteristic of prokaryotes
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Q140
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements is correct?
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2021 (7 sets)
- A. Fusion of two cells is called Karyogamy
- B. Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy
- C. Organisms that depend on living plants are called saprophytes
- D. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells
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Q141
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Select the correct pair.
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2021 (5 sets)
- A. Large colorless empty cells in the epidermis of grass leaves - Subsidiary cells
- B. In dicot leaves, vascular bundles are surrounded by large thick-walled cells - Conjunctive tissue
- C. Cells of medullary rays that form part of cambial ring - Interfascicular cambium
- D. Loose parenchyma cells rupturing the epidermis and forming a lens shaped opening in bark - Spongy parenchyma
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Q142
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 (10 sets)
- A. Satellite DNA
- B. Repetitive DNA
- C. Single nucleotides
- D. Polymorphic DNA
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Q143
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 ; Rosaceae
- B. Poaceae ; Leguminosae
- C. Poaceae ; Solanaceae
- D. Rosaceae ; Leguminosae
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Q145
BIOLOGY
Unit 3: Cell Structure and Function
What is the role of RNA polymerase III in the process of transcription in eukaryotes?
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2021 (3 sets)
- A. Transcribes rRNAs (28S, 18S and 5.8S)
- B. Transcribes tRNA, 5s rRNA and snRNA
- C. Transcribes precursor of mRNA
- D. Transcribes only snRNAs
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Q146
BIOLOGY
Unit 10: Ecology and Environment
In the exponential growth equation Nt = N0ert, e represents
↻ Repeated question — also appeared in
2021 (9 sets)
- A. The base of number logarithms
- B. The base of exponential logarithms
- C. The base of natural logarithms
- D. The base of geometric logarithms
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Q147
BIOLOGY
Unit 9: Biotechnology and Its Applications
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because :
↻ Repeated question — also appeared in
2021 (6 sets)
- A. mutated gene partially appears on a photographic film
- B. mutated gene completely and clearly appears on a photographic film
- C. mutated gene does not appear on a photographic film as the probe has no complementarity with it
- D. mutated gene does not appear on photographic film as the probe has complementarity with it
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Q148
CHEMISTRY
Unit 19: Biomolecules
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
Choose the correct answer from the options given below.
- A. (1) (iv) (i) (ii) (iii)
- B. (2) (i) (iv) (iii) (ii)
- C. (3) (ii) (i) (iv) (iii)
- D. (4) (iv) (iii) (i) (ii)
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Q149
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
Choose the correct answer from the options given below.
- A. (1) (iii) (ii) (i) (iv)
- B. (2) (iv) (ii) (iii) (i)
- C. (3) (iv) (i) (ii) (iii)
- D. (4) (ii) (iv) (iii) (i)
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Q150
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:
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2021 (9 sets)
- A. (1) It will not be able to confer ampicillin resistance to the host cell
- B. (2) The transformed cells will have the ability to resist ampicillin as well as produce β-galactoside
- C. (3) It will lead to lysis of host cell
- D. (4) It will be able to produce a novel protein with dual ability
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Q151
BIOLOGY
Unit 1: Diversity in Living World
Identify the incorrect pair:
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2021 (1 set)
- A. (1) Alkaloids – Codeine
- B. (2) Toxin – Abrin
- C. (3) Lectins – Concanavalin A
- D. (4) Drugs – Ricin
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Q152
BIOLOGY
Unit 3: Cell Structure and Function
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase?
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2021 (9 sets)
- A. (1) 8
- B. (2) 16
- C. (3) 4
- D. (4) 32
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Q153
BIOLOGY
Unit 1: Diversity in Living World
Match List-I with List-II:
(a) Metamerism
(b) Water canal system
(c) Comb plates
(d) Cnidoblasts
List-II:
(i) Ctenophora
(ii) Cnidaria
(iii) Annelida
(iv) Porifera
Choose the correct answer from the options given below.
- A. (1) (iv) (iii) (i) (ii)
- B. (2) (iii) (iv) (i) (ii)
- C. (3) (iii) (iv) (ii) (i)
- D. (4) (iv) (i) (ii) (iii)
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Q153
BIOLOGY
Unit 1: Diversity in Living World
Match List - I with List - II
List-I (a) Metamerism (b) Water canal system (c) Ctenophora (d) Cnidoblasts
List-II (i) Ctenoplana (ii) Porifera (iii) Annelida (iv) Cnidaria
Choose the correct answer from the options given below.
- A. (1) (iv) (iii) (i) (ii)
- B. (2) (iii) (iv) (i) (ii)
- C. (3) (iii) (iv) (ii) (i)
- D. (4) (iv) (i) (ii) (iii)
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Q154
BIOLOGY
Unit 5: Human Physiology
Match List-I with List-II.
List-I: (a) Vaults (b) IUDs (c) Vasectomy (d) Tubectomy
List-II: (i) Entry of sperm through Cervix is blocked (ii) Removal of Vas deferens (iii) Phagocytosis of sperms within the Uterus (iv) Removal of fallopian tube
Choose the correct answer from the options given below.
- A. (1) (iv) (ii) (i) (iii)
- B. (2) (i) (iii) (ii) (iv)
- C. (3) (ii) (iv) (iii) (i)
- D. (4) (iii) (i) (iv) (ii)
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Q155
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?
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2021 (8 sets)
- A. (1) T : 20 ; G : 30 ; C : 20
- B. (2) T : 20 ; G : 20 ; C : 30
- C. (3) T : 30 ; G : 20 ; C : 20
- D. (4) T : 20 ; G : 25 ; C : 25
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Q156
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following RNAs is not required for the synthesis of protein?
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2021 (5 sets)
- A. (1) mRNA
- B. (2) tRNA
- C. (3) rRNA
- D. (4) siRNA
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Q157
BIOLOGY
Unit 5: Human Physiology
Which one of the following is an example of Hormone releasing IUD?
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2021 (2 sets)
- A. (1) CuT
- B. (2) LNG 20
- C. (3) Cu 7
- D. (4) Multiload 375
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Q158
BIOLOGY
Unit 5: Human Physiology
Succus entericus is referred to as:
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2021 (9 sets)
- A. (1) Pancreatic juice
- B. (2) Intestinal juice
- C. (3) Gastric juice
- D. (4) Chyme
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Q159
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:
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2021 (9 sets)
- A. (1) Arthritis
- B. (2) Muscular dystrophy
- C. (3) Myasthenia gravis
- D. (4) Gout
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Q160
BIOLOGY
Unit 7: Genetics and Evolution
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.
Choose the correct answer from the options given below
- A. (b) and (d) only
- B. (b) and (c) only
- C. (a), (c) and (d) only
- D. (a) and (d) only
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Q161
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. Fire fly
- B. Grasshopper
- C. Cockroach
- D. House fly
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Q162
BIOLOGY
Unit 3: Cell Structure and Function
Which is the "Only enzyme" that has "Capability" to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes?
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2021 (3 sets)
- A. DNA dependent DNA polymerase
- B. DNA dependent RNA polymerase
- C. DNA Ligase
- D. DNase
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Q163
BIOLOGY
Unit 6: Reproduction
Receptors for sperm binding in mammals are present on :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Corona radiata
- B. Vitelline membrane
- C. Perivitelline space
- D. Zona pellucida
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Q164
BIOLOGY
Unit 3: Cell Structure and Function
The centriole undergoes duplication during:
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2021 (9 sets)
- A. S-phase
- B. Prophase
- C. Metaphase
- D. G2 phase
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Q165
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. Neophron
- B. Hemidactylus
- C. Macropus
- D. Ornithorhynchus
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Q166
BIOLOGY
Unit 5: Human Physiology
Erythropoietin hormone which stimulates R.B.C. formation is produced by:
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Alpha cells of pancreas
- B. The cells of rostral adenohypophysis
- C. The cells of bone marrow
- D. Juxtaglomerular cells of the kidney
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Q167
BIOLOGY
Unit 1: Diversity in Living World
Match the following:
List-I (a) Physalia (b) Limulus (c) Ancylostoma (d) Pinctada
List-II (i) Pearl oyster (ii) Portuguese Man of War (iii) Living fossil (iv) Hookworm
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2021 (4 sets)
- A. (ii) (iii) (i) (iv)
- B. (iv) (i) (iii) (ii)
- C. (ii) (iii) (iv) (i)
- D. (i) (iv) (iii) (ii)
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Q168
BIOLOGY
Unit 9: Biotechnology and Its Applications
During the process of gene amplification using PCR, if very high temperature is not maintained in the beginning, then which of the following steps of PCR will be affected first?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Annealing
- B. Extension
- C. Denaturation
- D. Ligation
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Q169
BIOLOGY
Unit 5: Human Physiology
Which of the following statements wrongly represents the nature of smooth muscle?
- A. These muscles have no striations
- B. They are involuntary muscles
- C. Communication among the cells is performed by intercalated discs
- D. These muscles are present in the wall of blood vessels
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Q170
BIOLOGY
Unit 3: Cell Structure and Function
The organelles that are included in the endomembrane system are:
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2021 (9 sets)
- A. Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
- B. Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles
- C. Golgi complex, Mitochondria, Ribosomes and Lysosomes
- D. Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
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Q171
BIOLOGY
Unit 8: Biology and Human Welfare
Match List-I with List-II:
List-I (a) Aspergillus niger, (b) Acetobacter aceti, (c) Clostridium butylicum, (d) Lactobacillus
List-II (i) Acetic acid, (ii) Lactic acid, (iii) Citric acid, (iv) Butyric acid
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2021 (1 set)
- A. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- B. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
- C. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
- D. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
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Q172
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?
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2021 (9 sets)
- A. Western Blotting Technique
- B. Southern Blotting Technique
- C. ELISA Technique
- D. Hybridization Technique
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Q173
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. A ring of gastric caeca is present at the junction of midgut and hind gut
- B. Hypopharynx lies within the cavity enclosed by the mouth parts
- C. In females, 7th-9th sterna together form a genital pouch
- D. 10th abdominal segment in both sexes, bears a pair of anal cerci
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Q174
BIOLOGY
Unit 5: Human Physiology
Persons with 'AB' blood group are called as 'Universal recipients'. This is due to :
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2021 (9 sets)
- A. Absence of antigens A and B on the surface of RBCs
- B. Absence of antigens A and B in plasma
- C. Presence of antibodies, anti-A and anti-B, on RBCs
- D. Absence of antibodies, anti-A and anti-B, in plasma
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Q175
BIOLOGY
Unit 10: Ecology and Environment
Dobson units are used to measure thickness of:
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2021 (9 sets)
- A. CFCs
- B. Stratosphere
- C. Ozone
- D. Troposphere
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Q176
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.
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2021 (8 sets)
- A. (c), (d) and (e) are correct
- B. (a), (b) and (c) are correct
- C. (a), (d) and (e) are correct
- D. (b), (c) and (e) are correct
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Q177
BIOLOGY
Unit 7: Genetics and Evolution
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
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2021 (10 sets)
- A. 50%
- B. 75%
- C. 25%
- D. 100%
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Q178
BIOLOGY
Unit 5: Human Physiology
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
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2021 (10 sets)
- A. Thrombin
- B. Renin
- C. Epinephrine
- D. Thrombokinase
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Q179
BIOLOGY
Unit 5: Human Physiology
Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.
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2021 (9 sets)
- A. High pO2, low pCO2, less H+, lower temperature
- B. Low pO2, high pCO2, more H+, higher temperature
- C. High pO2, high pCO2, less H+, higher temperature
- D. Low pO2, low pCO2, more H+, higher temperature
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Q191
CHEMISTRY
Unit 19: Biomolecules
Following are the statements with reference to 'lipids'.
(a) Lipids having only single bonds are called unsaturated fatty acids
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has 20 carbon atoms including carboxyl carbon.
(e) Arachidonic acid has 16 carbon atoms.
Choose the correct answer from the options given below:
↻ Repeated question — also appeared in
2021 (2 sets)
- A. (a) and (b) only
- B. (c) and (d) only
- C. (b) and (c) only
- D. (b) and (e) only
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