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 temperature scale approved in SI units is:	A. Celsius scale B. Kelvin scale C. Fehrenheit scale D. None of these
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	The percentage of available heat energy converted into work by a diesel engine is roughly	A. 35 %` B. 40 % C. 35 - 40 % D. 25 %
4	The disorder in the system increases due to the	A. removal of heat B. addition of heat C. removal or addition of heat D. none of them
5	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
6	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
7	The rate of change of momentum of a molecule is equal to:	A. Pressure B. Work C. Density D. Force
8	The absolute temperature of the tripple point of water is	A. 100°C B. 4°C C. 373 K D. 273.16 K
9	An irreversible heat flow from a hot to cold substances of a system, causes the disorder to	A. decrease B. remains the same C. increase D. any one of them
10	The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to	A. 0°C B. 10°C C. 17°C D. 20°C

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

Internal energy is the sum of all the forms of

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

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

If an amount of heat enters the system it could

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

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

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

In a heat engine, heat is supplied by the

During the whole carnot cycle

The work done by the system on its environment is considered as

A diatomic gas molecule has

Which of the following is not an assumption of kinetic energy

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

Which of the following is not thermo dynamical function?

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

Truth of kinetic energy is confirmed by:

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

A heat engine is that which converts

Pressure exerted by a gas is

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

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

In an adiabatic expansion, the temperature of the gas

The internal energy of a system does not depend upon the

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

Hotness and coldness of an object is represented in terms:

Adiabatic change occurs when the gas

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:

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

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

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ECAT Physics Chapter 11 Important MCQ's

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

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: