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

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Mohsin rajput Rajput 21 - Sep - 2025 06 Min 38 Sec 9/30
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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	One mole of any substance contain	A. same number of molecules B. different number of molecules C. may be same or different D. none of them
2	We can express the work in term of	A. directly measurable variables B. indirectly measurable variables C. either of them D. both of them
3	While deriving equation of pressure by kinetic theory of gases, we take into account:	A. Only linear motion of molecules B. Only rotational motion C. Only vibratory motion D. All of these
4	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
5	Truth of kinetic energy is confirmed by:	A. Diffusion of gases B. Brownian motion C. Both A and B D. None of these
6	The second law of thermodynamics is concerned with the circumstances in which	A. heat can be converted into work B. direction of flow of heat C. none of them D. both of them
7	Since the absolute scale is independent of the property of the working substance, hence, can be applied at	A. very high temperature B. very low temperature C. any one of them D. none of them
8	The pressure of gas everywhere inside the vessel will be the same provided the gas is of	A. Non-uniform density B. uniform density C. high density D. low density
9	Adiabatic change occurs when the gas	A. expands B. compressed C. expands or compressed D. expands or compressed rapidly
10	In thermodynamics, internal energy is the function of	A. temperature B. pressure C. state D. none of them

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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

The example of irreversible process is

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

No spark plug is needed in

The disorder in the system increases due to the

Absolute temperature can be calculated by

An isochoric process is one which take place at

Triple point of water is

When the temperature of source and sink of a heat engine become equal entropy change will be

Efficiency of carnot engine is independent of the

If an amount of heat enters the system it could

In the formula P = N0KT, N0denotes:

Good absorbers of heat are

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

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

Absolute zero is considered as that temperature at which:

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

The process which is carried out at constant temperature is known as

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

Internal energy is the sum of all the forms of

The motion of molecules in gases is:

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

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:

The bicycle pump provides a good example of

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

Energy gas behaves like an ideal gast at

For making cooking utensils, which of the following pairs of properties is most suited?

The Boltzman constant has the value

The earliest heat engine was

Which of the following is not an assumption of kinetic energy

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ECAT Physics Chapter 11 Important MCQ's

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In the formula P = N₀KT, N₀denotes:

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: