Question # 1

The temperature scale which is independent of nature of substance is.

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Thermodynamic scale

Centigrade scale

Fahrenheit scale

Regnault scale

Size of the molecules is much smaller as compared to the

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Mass of the molecules

Distance between the molecules

Density of the molecules

Volume of the molecules

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

First law of thermodynamics can be defined by the equation

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the work done in isochoric process is.

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Constant

Variable

Zero

Depend upon condition

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is.

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100%

70%

60%

50%

A diatomic gas molecules has

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Translational energy only

Rotational energy only

Vibrational energy only

All translational, Rotational and vibrational energy

The Carnot cycle can be shown by which graph

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P - T graph

P - V Graph

V- T graph

PV -T graph

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

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

The temperature of human body on Kelvin scale is

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210K

310K

410K

510K

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

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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