ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	Generally a temperature scale is established by using certain physical properties of a material which varies	A. nonlinearly with temperature B. linearly with temperature C. either of them D. none of them
2	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	A. Clausius statement of second law B. Kelvin'sstatement of second law C. Clausius statement of first law D. Kelvin's statement of first law
3	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:	A. Force B. Density C. Work done D. Pressure
4	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
5	A carnot cycle consists of	A. One step B. two step C. three steps D. four steps
6	A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called	A. reversible process B. irreversible process C. any one of them D. none of them
7	At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be	A. 81 K B. 355 K C. 627 K D. 627°C
8	In the theory of dimensional analysis, heat may be properly represented by:	A. ML²T^-2 B. MT^-2 C. ML^-1T^-1 D. None of these
9	At what temperature the adiabatic change is equivalent to the isothermal change?	A. Zero degree Celsius B. Zero Kelvin C. Critical temperature D. Above critical temperature
10	The temperature of gas is produced by	A. At potential energy of its molecules B. The kinetic energy of its molecules C. The attractive force between its molecules D. The repulsive force between its molecules

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ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

The rate of change of momentum of a molecule is equal to:

The example of irreversible process is

A real gas can be approximated to an ideal gas at

Electromagnetic waves emitted by hot bodies are called:

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

During the whole carnot cycle

At absolute temperature, the kinetic energy of the molecules

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 gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

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

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

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

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

Brownian motion increases due to

The behaviour of gases is well accounted by the kinetic theory based on

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

In the theory of dimensional analysis, heat may be properly represented by:

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

The unit of thermodynamical scale is

In the formula P = N0KT, N0denotes:

Which of the following is not an example of adiabatic process

The relationship between Boltzmann constant k with R and NAis given as:

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

The Boltzman constant has the value

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

Which quantity is important in stating the entropy of the system

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

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

Which of the following is a state variable

Efficiency of carnot engine is independent of the

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ECAT Physics Chapter 11 Important MCQ's

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Bilal A Munir

In the formula P = N₀KT, N₀denotes:

The relationship between Boltzmann constant k with R and N_Ais given as:

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