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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Israr Ahmed 09 - Mar - 2024 17 Min 46 Sec 60/120
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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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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	Pressure exerted by a gas is	A. Independent of density of the gas B. Inversely proportional to the density of the gas C. Directly proportional to the square of the density of the gas D. Directly proportional to the density of the gas
2	Absolute temperature can be calculated by	A. Means squares velocity B. Motion of the molecule C. Both A and B D. None of these
3	In case of an ideal gas, the P.E associated with its molecule is	A. maximum B. zero C. minimum D. not fixed
4	According to kinetic theory of gases, molecules of a gas behave like	A. Inelastic spheres B. Perfectly elastic rigid sphere C. Perfectly elastic non-rigid spheres D. Inelastic non-rigid spheres
5	A diatomic gas molecule has	A. translational energy B. rotaional energy C. vibrational energy D. all of them
6	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
7	For the working of a heat engine, there must be	A. a source of heat at high temperature B. a sink at low temperature C. both of them D. none of them
8	When the temperature of source and sink of a heat engine become equal entropy change will be	A. Zero B. Max C. Min D. -ve
9	Which of the following is not an assumption of kinetic energy	A. a finite volume of gas consists of very large number of molecules B. the gas molecules are in random motion C. collision between the gas molecules are inelastic D. the size of the gas molecules is much smaller than the separation between molecules
10	Amount of heat required to raise the temperature of a body through 1 K is called its	A. Specific heat B. Water equivalent C. Thermal capacity D. Entropy

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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

Average KE of a gas molecule has:

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

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

During the whole carnot cycle

Good absorbers of heat are

The curve representing an adiabatic process is called

In a heat engine, heat is supplied by the

The disorder in the system increases due to the

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

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

If the formula PV = nRT, n denotes:

Truth of kinetic energy is confirmed by:

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

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

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

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

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

If water in a closed bottle is taken up to the moon and opened, the water gets

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

We cannot utilize the heat contents of oceans and atmosphere because

One mole of any substance contain

Electromagnetic waves emitted by hot bodies are called:

One kilogram of different substances contain

An isochoric process is one which take place at

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

The efficiency of petrol engine is usually not more than 25% to 30% because of

The pressure exerted by the gas is

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

If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of

At absolute temperature, the kinetic energy of the molecules

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ECAT Physics Chapter 11 Important MCQ's

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