general science

Physics MCQ Questions and Answers Page - 3

1.

What is the unit of the physical quantity, Momentum ?

Answer/ Hint      

Answer : A

Explanation :

2.

Volt x second is the unit of : coulomb

Answer/ Hint      

Answer : Select Correct Ans

Explanation :

3.

An example of a solution of liquid in solid is :

Answer/ Hint      

Answer : B

Explanation :

4.

What will happen to the level of water in a vessel when a piece of ice floating in melts ?

Answer/ Hint      

Answer : C

Explanation :

5.

Which of the following quantity is a measure of inertia ?

Answer/ Hint      

Answer : C

Explanation :

6.

Maxwell is the unit of which one of the following ?

Answer/ Hint      

Answer : A

Explanation :

7.

Action and reaction  _________ .

Answer/ Hint      

Answer : B

Explanation :

8.

Which of the following is not a characteristic of solid ?

Answer/ Hint      

Answer : A

Explanation :

9.

Which of the following is not a vector quantity ?

Answer/ Hint      

Answer : B

Explanation :

10.

Which of the following is not a vector quantity ?

Answer/ Hint      

Answer : D

Explanation :

11.

It is difficult to fix a nail on a freely suspended wooden frame. Which law supports this statement ?

Answer/ Hint      

Answer : C

Explanation :

12.

What is the SI unit of frequency ?

Answer/ Hint      

Answer : D

Explanation :

13.

Soap bubble attains spherical shape due to  _________ .

Answer/ Hint      

Answer : C

Explanation :

14.

If the mass of an object is 60 kgs, what will be its weight on the moon ? (N=Newton)

Answer/ Hint      

Answer : C

Explanation :

15.

The SI unit of acceleration is  _________ .

Answer/ Hint      

Answer : A

Explanation :

16.

According to the Seconds Law of Motion, for a given force, acceleration is inversely proportional to the  _________  of an object.

Answer/ Hint      

Answer : D

Explanation :

17.

The distance-time graph for the motion of an object moving with a constant speed is a

Answer/ Hint      

Answer : C

Explanation :

18.

Newton-meter (Nm) is the SI unit of which of the following physical quantity ?

Answer/ Hint      

Answer : B

Explanation :

19.

How many Watts are there in a Metric Horse Power ?

Answer/ Hint      

Answer : A

Explanation :

20.

Due to which of the following reason soap bubbles look colourful in white light ?

Answer/ Hint      

Answer : D

Explanation :

21.

If action and reaction were to act on the same body,  _________ .

Answer/ Hint      

Answer : A

Explanation :

22.

Measurement means the comparison of an unknown quantity with some known fixed quantity called a  _________ .

Answer/ Hint      

Answer : A

Explanation :

A

23.

Which of the following is not a vector quantity ?

Answer/ Hint      

Answer : B

Explanation :

24.

Under which condition real gas can work as an ideal gas ?

Answer/ Hint      

Answer : B

Explanation :

25.

Density of water  _________  when it freezes.

Answer/ Hint      

Answer : A

Explanation :

26.

A body of mass 4 kg accelerates from 15 m/s to 25 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

Answer/ Hint      

Answer : B

Explanation :

27.

During  __________  motion of an object along a straight line, the change in velocity of the object for any time interval is zero.

Answer/ Hint      

Answer : D

Explanation :

28.

Which among the following types of coal produces most heat per unit ?

Answer/ Hint      

Answer : C

Explanation :

29.

When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance ?

Answer/ Hint      

Answer : A

Explanation :

30.

Rain drops fall from great height. Which among the following statements is true regarding it ?

Answer/ Hint      

Answer : A

Explanation :

31.

When a ring of metal is heated what happens to its hole ?

Answer/ Hint      

Answer : A

Explanation :

32.

Why the needle of iron swims on water surface when it is kept gently ?

Answer/ Hint      

Answer : C

Explanation :

33.

One kilowatt hour is equal to –

Answer/ Hint      

Answer : A

Explanation :

34.

How much calorie of energy is released by a boiled egg ?

Answer/ Hint      

Answer : D

Explanation :

35.

A boat will submerge when it displaces water equal to its own :

Answer/ Hint      

Answer : B

Explanation :

36.

Surface tension in a liquid is due to :

Answer/ Hint      

Answer : B

Explanation :

37.

A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to  3000  and left in a room. Which of them will have the slowest rate

Answer/ Hint      

Answer : C

Explanation :

38.

The snow on the mountains does NOT melt all at once when it is heated by the sun because :

Answer/ Hint      

Answer : B

Explanation :

39.

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is

Answer/ Hint      

Answer : C

Explanation :

40.

The velocity of sound in moist air is more than in dry air because the moist air has

Answer/ Hint      

Answer : A

Explanation :

41.

An ice block with a piece of lead embed in it floats in water. If ice melts the water level

Answer/ Hint      

Answer : B

Explanation :

42.

The plastic material commonly used for making gear wheels is

Answer/ Hint      

Answer : B

Explanation :

43.

When heated from 00 to 100C volume of given mass of water will :

Answer/ Hint      

Answer : D

Explanation :

44.

What principle/law explains the working of the hydraulic brakes in automobiles ?

Answer/ Hint      

Answer : C

Explanation :

45.

What apparatus is used to locate a submerged object ?

Answer/ Hint      

Answer : B

Explanation :

46.

Instrument used to measure the force and velocity of the wind is

Answer/ Hint      

Answer : B

Explanation :

47.

Woollen clothes keep the body warm because

Answer/ Hint      

Answer : B

Explanation :

48.

When a barometer reading suddenly recedes, it indicates that climate –

Answer/ Hint      

Answer : B

Explanation :

49.

Speed of sound is the greatest in :

Answer/ Hint      

Answer : C

Explanation :

50.

A gas thermometer is more sensitive than a liquid thermometer because a gas :

Answer/ Hint      

Answer : D

Explanation :

51.

Clothes keep us warm in winter because they :

Answer/ Hint      

Answer : D

Explanation :

52.

In a refrigerator what produces the cooling ?

Answer/ Hint      

Answer : C

Explanation :

53.

Which of the following is a non-renewable source of energy ?

Answer/ Hint      

Answer : D

Explanation :

54.

Heat from the Sun reaches the Earth by

Answer/ Hint      

Answer : C

Explanation :

55.

Which of the following parts of the sunlight makes the solar cooker hot ?

Answer/ Hint      

Answer : C

Explanation :

56.

Longitudinal waves cannot travel through

Answer/ Hint      

Answer : A

Explanation :

57.

Oil rises up the wick in a lamp because

Answer/ Hint      

Answer : D

Explanation :

58.

Plants are dried up in winter due to frost because

Answer/ Hint      

Answer : D

Explanation :

59.

Which of the following laws validates the statement that matter can neither be created nor destroyed ?

Answer/ Hint      

Answer : C

Explanation :

60.

Decibel is the unit used for

Answer/ Hint      

Answer : C

Explanation :

61.

The term “Isoneph” indicates the lines of equal

Answer/ Hint      

Answer : A

Explanation :

62.

Why does bleeding occur through the nose in high mountainous regions ?

Answer/ Hint      

Answer : C

Explanation :

63.

An oil drop spreads over water because

Answer/ Hint      

Answer : D

Explanation :

64.

Boyle’s law is a relationship between

Answer/ Hint      

Answer : A

Explanation :

65.

Which of the following produces more severe burns ?

Answer/ Hint      

Answer : C

Explanation :

66.

Which one of the following animals can hear ultrasonic sound ?

Answer/ Hint      

Answer : D

Explanation :

67.

A fountain pen works on the principle of

Answer/ Hint      

Answer : B

Explanation :

68.

A hydrogen balloon floats up because of

Answer/ Hint      

Answer : C

Explanation :

69.

Which of the following has got more heat capacity ?

Answer/ Hint      

Answer : B

Explanation :

70.

If the temperature of a place increases suddenly, the relative humidity

Answer/ Hint      

Answer : B

Explanation :

71.

The energy stored in a watch spring is

Answer/ Hint      

Answer : B

Explanation :

72.

The oldest type of energy known to man is

Answer/ Hint      

Answer : D

Explanation :

73.

Energy that is produced commercially from coal is called

Answer/ Hint      

Answer : C

Explanation :

74.

Water pipes in hilly areas often burst on a cold frosty night, because

Answer/ Hint      

Answer : B

Explanation :

75.

Why two thin shirts can keep us warmer than a single thick shirt in winter ?

Answer/ Hint      

Answer : C

Explanation :

76.

Sound cannot pass through

Answer/ Hint      

Answer : D

Explanation :

77.

In a photocell light energy is converted into

Answer/ Hint      

Answer : D

Explanation :

78.

An egg sinks in soft water but floats in a concentrated solution of salt because

Answer/ Hint      

Answer : C

Explanation :

79.

The process involved in making soap is

Answer/ Hint      

Answer : A

Explanation :

80.

The hair of shaving brush clings together when removed from water due to

Answer/ Hint      

Answer : A

Explanation :

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