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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Waleed Ahmed 24 - Feb - 2023 05 Min 43 Sec 50/120
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Maliha afridi 25 - Oct - 2018 11 Min 47 Sec 50/120
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Gimi tunio 30 - Jun - 2018 26 Min 00 Sec 45/120
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Malik Farhan 23 - May - 2021 07 Min 14 Sec 35/120
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Farhan Sial 30 - Aug - 2018 09 Min 36 Sec 30/120
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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	Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called	A. heat capacity B. specific heat capacity C. specific heat at constant volume D. specific heat at constant pressure
2	R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes	A. 2V B. 3V C. 0.5V D. V
3	In a heat engine, heat is supplied by the	A. cold reservoir B. sink C. hot reservoir D. none of them
4	The concept of entropy was introduced into the study of thermodynamics in	A. 1856 B. 1865 C. 1656 D. 1685
5	At constant volume temperature is increased. Then	A. Collision on walls will be less B. Number of collisions per unit time will increase C. Collision will be in straight lines D. Collision will not change
6	The product of the pressure and volume of an ideal gas is	A. A constant B. Approximately equal to the universal gas constant C. Directly proportional to its temperature D. Inversely proportional to its temperature
7	Melting point of ice	A. Increases with increasing pressure B. Decreases with increasing pressure C. Is independent of pressure D. Is proportional to pressure
8	If a liquid is heated in weightlessness, the heat is transmitted through	A. Conduction B. Convection C. Radiation D. Neither, because the liquid cannot be heated in weightlessness
9	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
10	The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to	A. 300°C B. 573°C C. 600°C D. 743°C

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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

In an ideal gas, the molecules have:

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

The earliest heat engine was

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

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

The example of irreversible process is

At constant volume temperature is increased. Then

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

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

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

Which of the following is a state variable

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

During the whole carnot cycle

Average KE of a gas molecule has:

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

One mole of any substance contain

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

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

A heat engine is that which converts

In the reverse process, the working substance passes through the same stages as in the direct process and

The efficiency of diesel engine is

A process is a reversible process, if the entropy of the system

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

The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to

Brownian motion increases due to

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

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

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

At constant temperature, if the density of the gas is increased, its pressure will:

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ECAT Physics Chapter 11 Important MCQ's

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