mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

A screw gauge has a pitch of 1 mm and 100 divisions on its circular scale. What is its least count?

Accepted Answer

B) 0.01 mm

Question 2

Which of the following errors is caused by the incorrect positioning of the observer's eye during a measurement?

Accepted Answer

D) Parallax error

Question 3

The dimensional formula for gravitational constant G is

Accepted Answer

A) [M-1 L3 T-2]

Question 4

The color of light is determined by its

Accepted Answer

C) Wavelength

Question 5

The phenomenon of total internal reflection is used in

Accepted Answer

C) Optical fiber

Question 6

In Young's double-slit experiment, the fringe width β is directly proportional to

Accepted Answer

B) Distance between slit and screen D

Question 7

Which of the following media cannot exhibit polarization of light?

Accepted Answer

B) Air

Question 8

Heat transfer in a vacuum occurs by

Accepted Answer

C) Radiation only

Question 9

A bimetallic strip works on the principle of

Accepted Answer

B) Differential expansion of metals

Question 10

Which temperature scale has an absolute zero as its starting point?

Accepted Answer

C) Kelvin

Question 11

Water has maximum density at

Accepted Answer

B) 4°C

Question 12

The calorific value of a fuel is measured in

Accepted Answer

C) kJ/kg

Question 13

An echo is formed due to the _______ of sound.

Accepted Answer

C) Reflection

Question 14

SONAR uses which type of waves for detection? / SONAR

Accepted Answer

B) Ultrasonic waves

Question 15

The apparent change in frequency of a sound wave due to relative motion between source and observer is called

Accepted Answer

C) Doppler effect

Question 16

Which of the following is a vector quantity?

Accepted Answer

D) Torque

Question 17

Limiting friction is

Accepted Answer

B) Maximum value of static friction

Question 18

A book weighing 10 N is placed on a table. The force exerted by the table on the book is

Accepted Answer

D) 10 N upward

Question 19

The area under a Force-Time graph represents

Accepted Answer

B) Impulse

Question 20

A ball is dropped from height h. The velocity of the ball when it reaches the ground is proportional to

Accepted Answer

C) √h

Question 21

A projectile is launched at an angle θ. For what value of θ is the horizontal range maximum?

Accepted Answer

B) 45°

Question 22

The work done to move a charge on an equipotential surface is

Accepted Answer

C) Zero

Question 23

Kepler's second law (law of equal areas) is a consequence of conservation of

Accepted Answer

C) Angular momentum

Question 24

Hooke's law is valid up to

Accepted Answer

C) Limit of proportionality

Question 25

The magnetic field lines inside a bar magnet

Accepted Answer

B) South to North

Question 26

The torque τ experienced by a bar magnet of pole strength m and length 2l in a uniform magnetic field B is

Accepted Answer

C) M B sin θ (M = 2ml)

Question 27

A diamagnetic substance has a magnetic susceptibility χ that is

Accepted Answer

C) Negative and small

Question 28

Coulomb's law states that the force between two point charges is proportional to

Accepted Answer

C) Product of charges

Question 29

Two resistors of 6 Ω and 3 Ω are connected in parallel. The equivalent resistance is / 6 Ω

Accepted Answer

B) 2 Ω

Question 30

Kirchhoff's first law (junction rule) is based on the conservation of

Accepted Answer

B) Charge

Question 31

A fuse wire works on the principle of

Accepted Answer

C) Joule's heating effect of current

Question 32

A step-up transformer increases

Accepted Answer

B) Voltage

Question 33

The charge-to-mass ratio (e/m) for cathode ray particles

Accepted Answer

C) Is a universal constant

Question 34

According to Rutherford's gold foil experiment, most of the atom is

Accepted Answer

B) Empty space

Question 35

In Bohr's model, the angular momentum of an electron in the nth orbit is

Accepted Answer

C) nh / (2π)

Question 36

A radioactive sample has a half-life of 5 years. What fraction of it will remain after 15 years?

Accepted Answer

C) 1/8

Question 37

Which of the following pairs are isobars?

Accepted Answer

B) ₆C¹⁴ and ₇N¹⁴

Question 38

Nuclear fusion reactions occur at

Accepted Answer

C) Extremely high temperatures

Question 39

The process of adding a pentavalent impurity to intrinsic silicon creates a

Accepted Answer

B) n-type semiconductor

Question 40

In a p-n junction diode, the depletion region is formed due to / p-n

Accepted Answer

B) Diffusion and recombination

Question 41

A Zener diode is primarily used as a

Accepted Answer

C) Voltage regulator

Question 42

The Boolean expression for a 2-input NAND gate is / 2

Accepted Answer

B) (A ·

Question 43

Which gas law relates volume and temperature at constant pressure?

Accepted Answer

B) Charles's law

Question 44

The number of moles in 18 g of water (H₂O) is / 18

Accepted Answer

B) 1

Question 45

The process of separating colored components from a mixture using a stationary and mobile phase is called

Accepted Answer

C) Chromatography

Question 46

Which of the following is a chemical change?

Accepted Answer

C) Rusting of iron

Question 47

Baking soda is chemically known as

Accepted Answer

B) Sodium bicarbonate

Question 48

Plaster of Paris has the chemical formula

Accepted Answer

C) CaSO₄·½H₂O

Question 49

What is the pH of a neutral solution at 25°C? / 25°C

Accepted Answer

C) 7

Question 50

When a strong acid reacts with a weak base, the resulting salt is

Accepted Answer

B) Acidic

Question 51

Which indicator remains colorless in acidic medium but turns pink in basic medium?

Accepted Answer

C) Phenolphthalein

Question 52

Oxidation number of Mn in KMnO₄ is / KMnO₄

Accepted Answer

C) +7

Question 53

Which quantum number determines the shape of an orbital?

Accepted Answer

B) l

Question 54

For an electron in 3d orbital, the possible values of magnetic quantum number m are / 3d

Accepted Answer

A) -2, -1, 0, +1, +2

Question 55

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

Accepted Answer

B) [Ar] 3d⁵ 4s¹

Question 56

Copper (Cu, Z=29) has the electronic configuration

Accepted Answer

C) [Ar] 3d¹⁰ 4s¹

Question 57

The element with atomic number 21 belongs to which block?

Accepted Answer

C) d-block

Question 58

Which of the following has the largest atomic radius?

Accepted Answer

D) Rb

Question 59

The ionization enthalpy of Nitrogen (N) is higher than that of Oxygen (O) because of

Accepted Answer

B) Half-filled 2p orbital stability in N

Question 60

Which of the following molecules has a linear shape?

Accepted Answer

D) BeH₂

Question 61

The hybridization of Carbon in Methane (CH₄) is

Accepted Answer

C) sp³

Question 62

Hydrogen bonding is NOT possible in

Accepted Answer

D) HCl

Question 63

The functional group –COOH represents

Accepted Answer

C) Carboxylic acid

Question 64

The third member of the alkene homologous series is

Accepted Answer

C) Butene