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	On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed	A. adiabatically B. isothermally C. isochorcally D. isobarically
2	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
3	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
4	The temperature scale approved in SI units is:	A. Celsius scale B. Kelvin scale C. Fehrenheit scale D. None of these
5	The basis to define a temperature scale that is independent of material properties is provided by	A. carbon cycle B. nitrogen cycle C. Carnot cycle D. irreversible cycle
6	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
7	The state in which ice, water and vapour coexists in equilibrium is called	A. zero degree celsius B. zero degree fahrenheit C. absolute zero D. 373 K
8	If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then	A. C_p- C_v= R B. C_p- C_{v < R} C. C_p- C_{v = 0} D. C_p- C_{v > R}
9	Good absorbers of heat are	A. Poor emitters B. Non emitters C. Good emitters D. Highly polarized
10	An isochoric process is one which take place at	A. Constant internal energy B. Constant entropy C. Constant volume D. Constant pressure

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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

Carnot heat engine only used

According to the second law, which is must to produce work

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

A real gas can be approximated to an ideal gas at

In thermodynamics, internal energy is the function of

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

The number of translation degress of freedom for a diatomic gas is

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

Sadi carnot described an ideal heat engine in

The curve representing an isothermal process is called

One kilogram of different substances contain

The nature of thermal radiation is similar to:

Which of the following is a state variable

A carnot cycle consists of

The unit of thermodynamical scale is

Melting point of ice

Which quantity is important in stating the entropy of the system

Rate of diffusion is

Which of the following is not an example of adiabatic process

Triple point of water is

The motion of molecules in gases is:

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

For the working of a heat engine, there must be

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:

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

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

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

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

The earliest heat engine was

A process is a reversible process, if the entropy of the system

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ECAT Physics Chapter 11 Important MCQ's

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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: