Question # 1

The temperature of human body on Kelvin scale is

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210K

310K

410K

510K

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

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

A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes.

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Halve

Doubled

Four time

Constant

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

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Thermodynamic scale

Centigrade scale

Fahrenheit scale

Regnault scale

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

In case the work done in zero.

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Constant pressure

Constant volume

Constant temperature

Constant mass

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

The behaviour of gases is discussed by

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Knowing their nature

Knowing their temperature

Kinetic theory

Maxwell's theory

An ideal heat engine can only be 100% efficient if its cold temperature reservoir is at.

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0 K

0 ^oC

100 K

100 ^oC

Efficiency of steam locomotive is.

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8%

10%

9%

7%

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

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Zero

100 J

200 J

-200 J

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

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

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Isothermal expension

Isothermal compression

Adiabatic expansion

Adiabatic compression

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

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

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Physics Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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