Question # 1

A material of thermometer should has:

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Visible

High freezing point

Low melting point

All of these

Water on cooling below 4 ^oC begins to:

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Expand

Contract

Boils

None of these

Thermostat is a controlling switch:

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Heat

Temperature

Sound

Light

Normal human body temperature is

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15oC

37oC

37oF

98.6oC

Expansion in one meter steel is:

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1.0 mm

0.1 mm

1.0 mm

1.3 mm

The value of absolute zero kelving temperature is:

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273^oC

273^oK

273^oF

-273^oC

The unit of rate of conduction :

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JS^-1

J

K

JK^-1

Melting point is also known as:

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Moiling point

Freezing point

Fusion point

None of these

The changing of a liquid into vapours from the surface of the liquid

without heating:

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Cooling

Vaporization

Evaporation

Sublimation

The energy store in an atom or molecule due to intermolecular force is:

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Kinetic energy

Potential energy

Internal energy

G.P.E

Which of the following affects evaporation?

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Temperature

Surface area of the liquid

Wind

All of the above

In ___________ (CFC) was found reacting with ozone.

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1920s

1970s

1950s

1960s

Latent heat of fusion of water is:

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3.36 x 10¹⁰ Jkg^-1

93.6 x 10¹⁰Jkg^-1

3.36 x 10⁵Jkg^-1

None of these

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9th Class Physics Chapter 8 Thermal Properties of Matter English Medium KPK Boards Online Mcqs MCQs With Answers

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