ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

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

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ECAT Physics Chapter 11 Heat & Thermodynamics

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Question # 1

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

A greater than than of B A
A is equal to that of B B
A is less than that of B C
A is twice the pressure of B D

Question # 2

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Ideal gas A
Inert gas B
Real gas C
None of these D

Question # 3

The second law of thermodynamics is concerned with the circumstances in which

heat can be converted into work A
direction of flow of heat B
none of them C
both of them D

Question # 4

For the working of a heat engine, there must be

a source of heat at high temperature A
a sink at low temperature B
both of them C
none of them D

Question # 5

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

outwards A
inwards B
in either way C
none of these D

Question # 6

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

decrease A
remains the same B
increase C
any one of them D

Question # 7

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:

Force A
Density B
Work done C
Pressure D

Question # 8

When heat is added into the system then change in entropy is

negative A
positive B
zero C
any one of them D

Question # 9

If the volume of the gas is to be increased by 4 times, then

Temperature and pressure must be doubled A
At constant P the temperature must be increased by 4 times B
At constant T the pressure must be increased by four times C
It cannot be increased D

Question # 10

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

Metal has high specific heat A
Metal has high thermal conductivity B
Metal has low specific heat C
Metal has low thermal conductivity D

Question # 11

The bicycle pump provides a good example of

first law of thermodynamics A
second law of thermodynamics B
third law of thermodynamics C
none of them D

Question # 12

Electromagnetic waves emitted by hot bodies are called:

Photoelectrons A
Alpha rays B
Thermal radiation C
None of these D

Question # 13

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

heat capacity A
specific heat capacity B
molar specific heat C
molar specific heat at constant volume D

Question # 14

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

adiabatically A
isothermally B
isochorcally C
isobarically D

Question # 15

Gas constant per molecule is called:

Universal gas constant A
Stefen's constant B
Boltzmann constant C
Gravitation constant D

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ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

ECAT Physics Chapter 11 Heat & Thermodynamics

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

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

The second law of thermodynamics is concerned with the circumstances in which

For the working of a heat engine, there must be

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

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:

When heat is added into the system then change in entropy is

If the volume of the gas is to be increased by 4 times, then

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

The bicycle pump provides a good example of

Electromagnetic waves emitted by hot bodies are called:

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Gas constant per molecule is called:

Prepare Complete Set Wise ECAT Physics Chapter 11 Heat & Thermodynamics MCQs Online With Answers

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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: