ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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Question # 1

Real gases strictly obey gas law at:

Question # 2

Which of the following is a state variable

Question # 3

In an adiabatic expansion, the temperature of the gas

Question # 4

Hotness and coldness of an object is represented in terms:

Question # 5

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Question # 6

If the distance between two charges is doubled, the force between them will become:

Question # 7

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

Question # 8

If an amount of heat enters the system it could

Question # 9

No spark plug is needed in

Question # 10

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 11

The number of translation degress of freedom for a diatomic gas is

Question # 12

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

Question # 13

The temperature of gas is produced by

Question # 14

We can express the work in term of

Question # 15

The state in which ice, water and vapour coexists in equilibrium is called

Question # 16

Triple point of water is

Question # 17

Pressure of a gas at constant volume is proportion to

Question # 18

Maximum density of H2O is at the temperature

Question # 19

In the formula P = N0KT, N0denotes:

Question # 20

In a heat engine, heat is supplied by the

Question # 21

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 22

When two objects come to common temperature, the body is said to be in:

Question # 23

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 24

The work done by the system on its environment is considered as

Question # 25

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 26

If the formula PV = nRT, n denotes:

Question # 27

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Question # 28

A heat engine is that which converts

Question # 29

The internal energy of a system does not depend upon the

Question # 30

At absolute temperature, the kinetic energy of the molecules

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Energy gas behaves like an ideal gast at
A. High temperature and low pressure
B. Low temperature and high pressure
C. Both A and B
D. None
2 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
3 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K
4 In an ideal gas, the molecules have:
A. Kinetic energy only
B. Potential energy only
C. Both KE and PE
D. None of these
5 Which of the following is a state variable
A. entropy
B. pressure
C. volume
D. all of them
6 The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :
A. 1.7 x 103J
B. 10.2 x 103J
C. 3..4 x 103J
D. 6.8 x 103J
7 The Boltzman constant has the value
A. 1.38 x 10-23JK-1
B. 1.28 x 10-23JK-1
C. 1.38 x 10-26JK-1
D. 1.28 x 10-26JK-1
8 The rate of change of momentum of a molecule is equal to:
A. Pressure
B. Work
C. Density
D. Force
9 Good absorbers of heat are
A. Poor emitters
B. Non emitters
C. Good emitters
D. Highly polarized
10 The value of E0in coulomb's law is:
A. 9 x 109Nm2C-2
B. 8.85 x 10-12C2N-1m-2
C. 8.85 x 10-12Nm2C-2
D. 9 x 109C2N-1m-2

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