Question # 1

The behaviour of gases is discussed by

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Knowing their nature

Knowing their temperature

Kinetic theory

Maxwell's theory

The unit o pressure of gas is

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Nm^-2

Pascal

Atmosphere

All of these

For a diatomic gas Cv= 5R/2 then gamma for this gas is.

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5/7

4/35

7/5

35/4

Which of following is irreversible process

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Slow compression of an elastic spring

Slow evaporation of substances in isolated vessel

Slow expansion of a gas

A chemical explosion

The difference between two molar capacities is equal to.

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Plank's constant

General gas constant

Molar gas constant

Boltzmann constant

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

Which one is true for isothermal process.

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Q = 0

W = 0

Q = W(D) Delta U = 0

None of these

If heat is added to a system, then its entropy will.

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Increases and positive

Decrease and positive

Increases but negative

Decreases but negative

Temperature of a gas is increased from 27 oC to 127 oC. The ratio of its mean K.E. will be

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3/4

9/16

4/3

10/9

S.I Unit of pressure of gas is.

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Nm

N.m

N2/m

N3m

Unite of thermodynamics scale of temperature is.

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Centigrade

Fahrenheit

Kelvin

Celsius

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

In the thermodynamics process , the equation W = -delta U represents.

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Isothermal expension

Isothermal compression

Adiabatic expansion

Adiabatic compression

Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

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Physics Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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