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

Which of the following is not an assumption of kinetic energy

Question # 2

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Question # 3

In case of an ideal gas, the P.E associated with its molecule is

Question # 4

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

Question # 5

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

Question # 6

The volume of universal gas constant R is:

Question # 7

The only significant motion possessed by the mono-atomic gas represented is:

Question # 8

When heat is removed from the system

Question # 9

First law of thermodynamics is consequence of conservation of

Question # 10

The product of the pressure and volume of an ideal gas is

Question # 11

The concept of entropy was introduced into the study of thermodynamics in

Question # 12

Rate of diffusion is

Question # 13

First law of thermodynamic is special case of

Question # 14

The absolute temperature for an ideal gas is

Question # 15

Carnot heat engine only used

Question # 16

On colliding in a closed container, the gas molecules

Question # 17

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 18

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

Question # 19

In the study of thermodynamics, which gas is considered as the working substance

Question # 20

Boyle's law is applicable in

Question # 21

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

Question # 22

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 23

While deriving equation of pressure by kinetic theory of gases, we take into account:

Question # 24

The value of E0in coulomb's law is:

Question # 25

A heat engine is that which converts

Question # 26

Rice takes longest to cook

Question # 27

The percentage of available heat energy converted into work by a petrol engine is roughly

Question # 28

While deriving the equation for pressure of a gas we consider the

Question # 29

If an amount of heat enters the system it could

Question # 30

In an ideal gas, the molecules have:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Which quantity is important in stating the entropy of the system
A. initial entropy
B. final entropy
C. change in entropy
D. none of them
2 In thermodynamics, internal energy is the function of
A. temperature
B. pressure
C. state
D. none of them
3 Carnot heat engine only used
A. isothermal processes
B. adiabatic processes
C. both of them
D. none of them
4 At constant temperature, if the density of the gas is increased, its pressure will:
A. One kg of a substance
B. Unit volume of a substance
C. One mole of a substance
D. None of these
5 The work done on the system by the environment is considered as
A. positive
B. negative
C. zero
D. any one of them
6 Absolute zero is considered as that temperature at which:
A. All liquid become gases
B. All gases become liquid
C. Water freezes
D. None of these
7 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
8 If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:
A. Force
B. Density
C. Work done
D. Pressure
9 When two objects come to common temperature, the body is said to be in:
A. Static equilibrium
B. Dynamic equilibrium
C. Thermal equilibrium
D. None of these
10 The absolute temperature for an ideal gas is
A. directly proportional to the rotational K.E of gas molecules
B. directly proportional to the vibrational K.E of gas molecules
C. directly proportional to the average translational K.E.of gas molecules
D. directly proportional to the P.E. of gas molecules

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