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

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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	The concept of entropy was introduced into the study of thermodynamics in	A. 1856 B. 1865 C. 1656 D. 1685
2	Generally a temperature scale is established by	A. one fixed point B. two fixed point C. three fixed point D. four fixed point
3	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
4	The efficiency of diesel engine is	A. 25% B. 25 - 30% C. 35% D. 35 - 40%
5	A real gas can be approximated to an ideal gas at	A. Low density B. High pressure C. High density D. Low temperature
6	In the formula P = N₀KT, N₀denotes:	A. Number of molecules per unit per volume B. Number of moles C. Number of molecules D. None of these
7	Energy gas behaves like an ideal gast at	A. High temperature and low pressure B. Low temperature and high pressure C. Both A and B D. None
8	Absolute temperature can be calculated by	A. Means squares velocity B. Motion of the molecule C. Both A and B D. None of these
9	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
10	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

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

The motion of molecules in gases is:

The unit of thermodynamical scale is

In the study of thermodynamics, which gas is considered as the working substance

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

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

In which process the condition for the application of Boyle's law on the gas is fulfilled

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

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

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

In an adiabatic process the work is done at the expense of the

The value of E0in coulomb's law is:

First law of thermodynamic is special case of

A carnot cycle consists of

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

At constant volume temperature is increased. Then

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:

Adiabatic change occurs when the gas

In thermodynamics, internal energy is the function of

The ideal gas law is

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

Melting point of ice

In an ideal gas, the molecules have:

The internal energy of a system does not depend upon the

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

According to kinetic theory of gases, molecules of a gas behave like

Gas constant per molecule is called:

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

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

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ECAT Physics Chapter 11 Important MCQ's

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The value of E₀in coulomb's law is:

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: