ECAT Pre General Science Chapter 11 online mcq test with answers for Physics chapter 11 (Heart & Thermodynamics)

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Malik Farhan 26 - Jan - 2019 08 Min 09 Sec 80/120
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Ahmed Ali Shah 07 - Nov - 2023 01 Min 01 Sec 25/120
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kamal deep 17 - Jun - 2023 02 Min 55 Sec 20/120
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hamza abid 27 - Jan - 2022 10 Min 50 Sec 20/120
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Mohsin rajput Rajput 21 - Sep - 2025 06 Min 38 Sec 9/30
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Frankie 09 - Sep - 2022 01 Min 29 Sec 0/120

ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	Which of the following is not an example of adiabatic process	A. the rapid escape of air from a burst type B. the rapid expansion and compression of air through which a sound wave is passing C. cloud formation in the atmosphere D. none of them
2	If an amount of heat enters the system it could	A. decrease the internal energy B. not change the internal energy C. increase the internal energy D. none of them
3	A reversible cycle is the one in which	A. some of the changes are reversible B. all of the changes are reversible C. all of the changes are irreversible D. none of them
4	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
5	A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be	A. 1/2 B. More than 1/2 C. Less than 1/2 D. Between 1 and 2
6	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. A greater than than of B B. A is equal to that of B C. A is less than that of B D. A is twice the pressure of B
7	The earliest heat engine was	A. petrol engine B. diesel engine C. electric engine D. steam engine
8	What temperature is the same on Celsius scale as well as on Fahrenheit scale?	A. 32°C B. -32°C C. -40°C D. -212°C
9	If a process cannot be retraced in the backward direction by reversing the controlling factors, it is	A. a reversible process B. an irreversible process C. any one of them D. both of them
10	Pressure of a gas at constant volume is proportion to	A. Total energy of gas B. Average P.E to molecules C. Average K.E of molecules D. Total internal energy of gas

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ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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

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

Rice takes longest to cook

If the formula PV = nRT, n denotes:

The pressure exerted by the gas is

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

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

First law of thermodynamics is consequence of conservation of

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

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

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

The earliest heat engine was

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

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

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

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

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

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

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

The absolute temperature for an ideal gas is

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

The curve representing an isothermal process is called

The example of reversible process is

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

When heat is removed from the system

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

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

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

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ECAT Physics Chapter 11 Important MCQ's

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If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then