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 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
2	The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at	A. 546 K B. 273 K C. 546°C D. 273°C
3	One kilogram of different substances contain	A. same number of molecules B. different number of molecules C. may be same or different D. none of them
4	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
5	Absolute zero is considered as that temperature at which:	A. All liquid become gases B. All gases become liquid C. Water freezes D. None of these
6	On colliding in a closed container, the gas molecules	A. Transfer momentum to the walls B. Momentum becomes zero C. Move in opposite directions D. Perform Brownian motion
7	Brownian motion increases due to	A. Increase in size of Brownian particle B. Increase in temperature of medium C. Increase in density of medium D. Increase in viscosity of medium
8	A process is a reversible process, if the entropy of the system	A. increases B. decreases C. remains constant D. none of them
9	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
10	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	A. A greater than than of B B. A is equal to that of B C. A is less than that of B D. A is twice the pressure of B

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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

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

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

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

The bicycle pump provides a good example of

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

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

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

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

The disorder in the system increases due to the

Pressure may be define as _______ per second per unit area:

Truth of kinetic energy is confirmed by:

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

Average KE of a gas molecule has:

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

We can express the work in term of

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

At what temperature the adiabatic change is equivalent to the isothermal change?

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

If the volume of the gas is to be increased by 4 times, then

Hotness and coldness of an object is represented in terms:

Which of the following is not an example of adiabatic process

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

Carnot heat engine only used

The temperature scale approved in SI units is:

Adiabatic change occurs when the gas

A process in which no heat enters or leaves the system is called

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

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

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

The temperature of gas is produced by

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ECAT Physics Chapter 11 Important MCQ's

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