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

Top Scorers Of ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics MCQ`s Test

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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	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
2	First law of thermodynamic is special case of	A. Law of conservation of energy B. Charle's law C. Law of conservation of mass D. Boyle's law
3	Which of the following is not thermo dynamical function?	A. Enthalpy B. Work done C. Gibb's energy D. Internal energy
4	Pressure may be define as _______ per second per unit area:	A. Change in force B. Change in momentum C. Change in energy D. Work done
5	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
6	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
7	In the reverse process, the working substance passes through the same stages as in the direct process and	A. thermal effects at each stage are exactly reversed B. mechanical effects at each stage are exactly reversed C. thermal and mechanical effects at each stage remain the same D. thermal and mechanical effects at each stage are exactly reversed
8	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
9	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	A. P=P/V<1/2mv²> B. P=2N/V<1/2mv²> C. P=2/3N/V<1/2mv²> D. P=2/3N/V<mv²>
10	The earliest heat engine was	A. petrol engine B. diesel engine C. electric engine D. steam engine

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

An isochoric process is one which take place at

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

Amount of heat required to raise the temperature of a body through 1 K is called its

The curve representing an adiabatic process is called

Good absorbers of heat are

If a liquid is heated in weightlessness, the heat is transmitted through

In an ideal gas, the molecules have:

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Generally a temperature scale is established by

At O° K which of the following properties of a gas will be zero?

Generally a temperature scale is established by using certain physical properties of a material which varies

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

The internal energy of a system does not depend upon the

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

The earliest heat engine was

We can express the work in term of

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

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

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

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

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

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

The disorder in the system increases due to the

In all natural processes where heat flows from one system to another, there is always a net

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

One kilogram of different substances contain

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

A succession of events which bring the system back to its initial condition is called

Gas constant per molecule is called:

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ECAT Physics Chapter 11 Important MCQ's

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