mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

Which of the following is the correct SI base unit for thermodynamic temperature?

Accepted Answer

B) Kelvin

Question 2

In a measurement, the difference between the true value and the measured value is called:

Accepted Answer

A) Absolute error

Question 3

Which dimensional formula corresponds to force?

Accepted Answer

B) [MLT⁻²]

Question 4

If a wire is stretched by 0.2% and the measured strain is 0.002, what is the accuracy of the strain measurement in terms of percentage error?

Accepted Answer

A) 0% (0%)

Question 5

Which of the following is a dimensionless quantity?

Accepted Answer

A) Strain

Question 6

A light ray traveling from glass to air undergoes total internal reflection if the angle of incidence is:

Accepted Answer

C) Greater than critical angle

Question 7

The relation between focal length f, object distance u and image distance v for a spherical mirror is:

Accepted Answer

C) 1/f = 1/u + 1/v

Question 8

Which phenomenon explains the vivid colors in soap bubbles?

Accepted Answer

C) Interference

Question 9

The angle of polarization for glass is 57°. The refractive index of glass is approximately:

Accepted Answer

B) 1.54

Question 10

Which of the following EM waves has the highest frequency?

Accepted Answer

D) X-rays

Question 11

The magnification produced by a plane mirror is:

Accepted Answer

B) 1

Question 12

Heat transfer by direct molecular collisions occurs in:

Accepted Answer

A) Conduction

Question 13

The coefficient of linear expansion of a solid is α. The coefficient of superficial expansion is approximately:

Accepted Answer

B) 2α

Question 14

At which temperature do Celsius and Fahrenheit scales show the same numerical value?

Accepted Answer

A) –40° (–40°)

Question 15

A calorimeter of water equivalent 10 g contains 100 g water at 30°C. 50 g of ice at 0°C is added. Final temperature of the mixture will be (latent heat of fusion of ice = 80 cal/g, specific heat of water = 1 cal/g°C): / 10 g

Accepted Answer

A) 0°C (0°C)

Question 16

Water has maximum density at:

Accepted Answer

B) 4°C (4°C)

Question 17

The calorific value of a fuel is expressed in:

Accepted Answer

D) Any of these

Question 18

The product of frequency and wavelength of a sound wave gives:

Accepted Answer

B) Velocity

Question 19

A sound wave of frequency 500 Hz is traveling in air with speed 340 m/s. The phase difference between two points 0.17 m apart is: / 500 Hz

Accepted Answer

B) π

Question 20

Which characteristic of sound helps distinguish between two musical instruments playing the same note?

Accepted Answer

C) Timbre

Question 21

The Doppler effect is not observed when:

Accepted Answer

C) Both source and observer move with same velocity in same direction

Question 22

Which of the following is a scalar quantity?

Accepted Answer

C) Work

Question 23

A body moving with uniform speed in a circular path has:

Accepted Answer

B) Constant acceleration

Question 24

The limiting friction between two surfaces depends on:

Accepted Answer

B) Nature of surfaces

Question 25

A ball is thrown vertically upward with speed 20 m/s. The maximum height attained is (g=10 m/s²):

Accepted Answer

B) 20 m (20

Question 26

Two objects of masses m and 2m have equal kinetic energy. The ratio of their momenta (p_light : p_heavy) is:

Accepted Answer

B) 1:√2

Question 27

A projectile is launched at 45° for maximum range. If air resistance is neglected, the path is:

Accepted Answer

C) Parabola

Question 28

A spring of force constant k is cut into two equal halves. The force constant of each half is:

Accepted Answer

B) 2k

Question 29

The gravitational force between two masses is F. If distance is doubled and one mass is halved, the new force becomes:

Accepted Answer

C) F/8

Question 30

According to Kepler's third law, the square of orbital period T of a planet is proportional to:

Accepted Answer

C) a² (a²)

Question 31

The center of mass of a system of particles lies:

Accepted Answer

C) At the position where total mass can be assumed concentrated

Question 32

Magnetic lines of force inside a bar magnet:

Accepted Answer

A) Move from south to north

Question 33

The pole strength of a bar magnet is 40 A·m and its length is 10 cm. The magnetic dipole moment is:

Accepted Answer

A) 4 A·m² (4 A·m²)

Question 34

The force between two magnetic poles obeys:

Accepted Answer

A) Inverse square law

Question 35

Which material has the highest relative permeability?

Accepted Answer

B) Soft iron

Question 36

The electric field inside a charged spherical conductor in electrostatic equilibrium is:

Accepted Answer

A) Zero

Question 37

Two point charges +q and +q are placed 2a apart. The electric potential at the midpoint is:

Accepted Answer

C) 2kq/a (2kq/a)

Question 38

Three resistors 2Ω, 3Ω, 6Ω are connected in parallel. The equivalent resistance is:

Accepted Answer

B) 1 Ω

Question 39

The EMF of a cell is measured in:

Accepted Answer

B) Volt

Question 40

A primary cell differs from a secondary cell because it:

Accepted Answer

A) Cannot be recharged

Question 41

In a circuit, Kirchhoff’s first law (junction rule) is based on conservation of:

Accepted Answer

B) Charge

Question 42

A conductor carries 2 A current for 5 seconds. The heat produced across a 10 Ω resistor is:

Accepted Answer

C) 200 J (200

Question 43

Fleming's left hand rule gives the direction of:

Accepted Answer

C) Force on a current-carrying conductor

Question 44

Lenz's law is a consequence of conservation of:

Accepted Answer

B) Energy

Question 45

A step-up transformer increases:

Accepted Answer

A) Voltage

Question 46

Cathode rays are streams of:

Accepted Answer

B) Electrons

Question 47

According to Rutherford's atomic model, the atom consists of:

Accepted Answer

B) Small dense positively charged nucleus

Question 48

Which radiation has the highest penetrating power?

Accepted Answer

C) Gamma

Question 49

Mass defect in a nucleus is due to:

Accepted Answer

A) Binding energy

Question 50

The half-life of a radioactive substance is 5 years. The fraction remaining after 15 years is:

Accepted Answer

C) 1/8

Question 51

Isotones are nuclei with same number of:

Accepted Answer

B) Neutrons

Question 52

Nuclear fission is the process of:

Accepted Answer

B) A heavy nucleus splits into lighter nuclei

Question 53

In a p-n junction diode, the region devoid of free charge carriers is called: / p-n

Accepted Answer

B) Depletion region

Question 54

A Zener diode is primarily used for:

Accepted Answer

C) Voltage regulation

Question 55

In an n-p-n transistor, the majority charge carriers in the emitter are: / n-p-n

Accepted Answer

B) Electrons

Question 56

Which logic gate gives output HIGH only when all inputs are HIGH?

Accepted Answer

B) AND

Question 57

In amplitude modulation, the parameter varied is:

Accepted Answer

C) Amplitude

Question 58

Which state of matter has definite volume but no definite shape?

Accepted Answer

B) Liquid

Question 59

Chromatography is used primarily for:

Accepted Answer

A) Separation of mixtures

Question 60

According to Boyle's law, at constant temperature, PV =:

Accepted Answer

A) Constant

Question 61

The number of atoms in 0.5 mol of oxygen gas (O₂) is:

Accepted Answer

B) 6.02×10²³

Question 62

In stoichiometry, the limiting reagent is the one that:

Accepted Answer

B) Gets consumed first

Question 63

Which law states equal volumes of gases at same temperature and pressure contain equal number of molecules?

Accepted Answer

B) Avogadro's law

Question 64

Which of the following is a chemical change?

Accepted Answer

C) Rusting of iron