mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

Which of the following pairs of physical quantities have the same dimensions?

Accepted Answer

A) Work and Torque

Question 2

A student measures the length of a rod as 25.0 cm using a meter scale with least count 0.1 cm. The measurement should be reported as:

Accepted Answer

B) 25.0 ± 0.1 cm

Question 3

The dimensional formula [ML⁻¹T⁻²] corresponds to which physical quantity?

Accepted Answer

B) Pressure

Question 4

In an experiment, the measured value of g is 9.75 m/s² while the accepted value is 9.81 m/s². What is the percentage error?

Accepted Answer

A) 0.61%

Question 5

Candela is the SI base unit of:

Accepted Answer

C) Luminous intensity

Question 6

Which phenomenon explains the formation of a rainbow?

Accepted Answer

C) Refraction, total internal reflection, and dispersion

Question 7

For total internal reflection to occur, light must travel from:

Accepted Answer

B) Denser to rarer medium

Question 8

In Young's double slit experiment, the central fringe is always:

Accepted Answer

B) Bright

Question 9

Which of the following waves CANNOT be polarized?

Accepted Answer

C) Sound waves

Question 10

The electromagnetic wave with the highest frequency among the following is:

Accepted Answer

D) Gamma rays

Question 11

The transmission of heat in a vacuum occurs by:

Accepted Answer

C) Radiation

Question 12

Water expands on cooling below 4°C due to: / 4°C

Accepted Answer

B) Anomalous expansion

Question 13

The amount of heat required to raise the temperature of 1 gram of water by 1°C is called: / 1

Accepted Answer

B) Calorie

Question 14

The temperature at which a solid directly converts to vapour without passing through the liquid state is called:

Accepted Answer

C) Sublimation point

Question 15

The calorific value of a fuel is expressed in:

Accepted Answer

A) kJ/kg or kcal/kg / kJ/kg

Question 16

The speed of sound is maximum in:

Accepted Answer

C) Steel

Question 17

The persistence of sound in a hall due to multiple reflections is called:

Accepted Answer

C) Reverberation

Question 18

SONAR works on the principle of:

Accepted Answer

B) Reflection of sound

Question 19

When a source of sound moves away from a stationary observer, the apparent frequency:

Accepted Answer

B) Decreases

Question 20

A vector quantity among the following is:

Accepted Answer

C) Displacement

Question 21

Static friction is always:

Accepted Answer

A) Greater than kinetic friction

Question 22

Newton's second law of motion is represented as:

Accepted Answer

B) F = dp/dt

Question 23

The horizontal range of a projectile is maximum when the angle of projection is:

Accepted Answer

B) 45°

Question 24

1 kilowatt-hour (kWh) of energy equals: / 1

Accepted Answer

B) 3.6 × 10⁶ J

Question 25

According to the law of conservation of energy, energy can be:

Accepted Answer

C) Neither created nor destroyed

Question 26

The center of mass of a uniform solid sphere lies:

Accepted Answer

B) At its geometric center

Question 27

The value of acceleration due to gravity 'g' at the equator is:

Accepted Answer

B) Minimum

Question 28

Which Kepler's law states that "a line joining a planet and the Sun sweeps equal areas in equal intervals of time"?

Accepted Answer

B) Second Law

Question 29

Hooke's law is valid within:

Accepted Answer

B) Elastic limit

Question 30

The number of magnetic lines of force passing normally through a surface is called:

Accepted Answer

B) Magnetic flux

Question 31

The force between two magnetic poles is governed by:

Accepted Answer

B) Inverse square law

Question 32

Materials that are strongly attracted to a magnet and can be permanently magnetized are called:

Accepted Answer

C) Ferromagnetic

Question 33

Two point charges q₁ and q₂ separated by distance r experience force F. If the distance is doubled, the force becomes:

Accepted Answer

B) F/4

Question 34

The resistance of a conductor is 5 Ω. When connected in parallel with another resistor R, the equivalent resistance is 2 Ω. Find R.

Accepted Answer

B) 3.33 Ω

Question 35

A cell converts:

Accepted Answer

A) Chemical energy to electrical energy

Question 36

According to Ohm's law, the V-I graph for a metallic conductor at constant temperature is:

Accepted Answer

C) A straight line passing through origin

Question 37

In Kirchhoff's loop rule, the algebraic sum of all potential differences in a closed loop is:

Accepted Answer

C) Zero

Question 38

An electric heater rated 1000 W operates for 2 hours. The energy consumed is: / 1000 W

Accepted Answer

B) 2 kWh

Question 39

According to Fleming's left hand rule, the middle finger points in the direction of:

Accepted Answer

C) Current

Question 40

The emf induced in a coil is directly proportional to:

Accepted Answer

A) Rate of change of magnetic flux

Question 41

A transformer works on the principle of:

Accepted Answer

B) Mutual induction

Question 42

X-rays are produced when fast-moving electrons are suddenly stopped by a metal target. These electrons are emitted from:

Accepted Answer

B) Cathode

Question 43

According to Bohr's model, the angular momentum of an electron in the nth orbit is:

Accepted Answer

B) nh/2π

Question 44

The mass defect in a nucleus is the difference between:

Accepted Answer

B) Actual mass of nucleus and sum of masses of its nucleons

Question 45

The half-life of a radioactive substance is 10 days. After 30 days, the fraction of the substance remaining is:

Accepted Answer

C) 1/8

Question 46

Isotopes of an element have the same number of:

Accepted Answer

C) Protons

Question 47

The process in which a heavy nucleus splits into two lighter nuclei with release of energy is called:

Accepted Answer

B) Nuclear fission

Question 48

A Zener diode is primarily used as:

Accepted Answer

C) Voltage regulator

Question 49

In a p-n-p transistor, the current conduction is mainly due to: / p-n-p

Accepted Answer

A) Holes

Question 50

The logic gate whose output is 1 only when all inputs are 1 is:

Accepted Answer

B) AND

Question 51

Which of the following is NOT a state of matter?

Accepted Answer

D) Alloy

Question 52

Which separation technique is based on the difference in boiling points?

Accepted Answer

C) Distillation

Question 53

Boyle's law relates which two quantities at constant temperature?

Accepted Answer

C) Pressure and Volume

Question 54

One mole of any gas at STP occupies: / STP

Accepted Answer

B) 22.4 L

Question 55

In the reaction N₂ + 3H₂ → 2NH₃, if 56 g of N₂ reacts completely, the mass of NH₃ formed is:

Accepted Answer

D) 68 g

Question 56

The chemical formula of Baking Soda is:

Accepted Answer

B) NaHCO₃

Question 57

Plaster of Paris (CaSO₄·½H₂O) is obtained by heating gypsum at:

Accepted Answer

D) Both A and C / A

Question 58

A salt formed from a strong acid and a weak base is:

Accepted Answer

A) Acidic

Question 59

Oxidation involves:

Accepted Answer

B) Loss of electrons

Question 60

A solution with pH = 3 is how many times more acidic than a solution with pH = 6? / pH = 3

Accepted Answer

D) 1000 times / 1000

Question 61

According to Hund's rule, electrons fill degenerate orbitals:

Accepted Answer

B) Singly with parallel spins

Question 62

The electronic configuration of Chromium (Cr, Z=24) is:

Accepted Answer

B) [Ar] 3d⁵ 4s¹

Question 63

Which element has the highest electronegativity?

Accepted Answer

C) Fluorine

Question 64

The bond angle in sp² hybridized molecules is approximately: / sp²

Accepted Answer

B) 120°