Question # 1

The mean kinetic energy of gas is at.

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0 ^oC

-273 ^oC

100 K

100 ^oC

S.I Unit of pressure of gas is.

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Nm

N.m

N2/m

N3m

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

A Carnot engine has an efficiency of 50% when its sink temperature is at 27 ^oC. The temperature of source.

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273^oC

300 ^oC

327 ^oC

373 ^oC

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

The unit o pressure of gas is

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Nm^-2

Pascal

Atmosphere

All of these

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

In case the work done in zero.

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Constant pressure

Constant volume

Constant temperature

Constant mass

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

Value of triple point of water is given as.

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Zero K

100 K

273.16 K

373.16 K

Force acting on the piston to move outward is.

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Compressive stoke

Power stoke

All stoke

Exhaust stoke

the change in internal energy is defined as

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Q - W

Q-T

Q + P

Q - P

At which of the following temperature a body has maximum internal energy.

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-273 ^oC

0 K

273 K

-273 K

Which is an example of irreversible process.

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Explosion

Evaporation

Slow compression

A chemical explosion

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