Question # 1

Earth's gravitational force of attraction vanishes at:

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6400 km

Infinity

42300 km

1000 km

The pressure of liquid is given by

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pg V

pg A

pgh

pg

Which of the following affects evaporation?

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Temperature

Surface area of the liquid

Wind

All of the above

Normal human body temperature is :

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15°C

98.6°C

37°C

37°F

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

without heating:

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Cooling

Vaporization

Evaporation

Sublimation

if force on body on y-axis is 100N than x-axis is:

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1000 N

200 N

600 N

0 N

Degree of hotness or coldness of the body is called:

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Heat capacity

Thermal conductivity

Heat

Temperture

Example of bad conductor is:

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Wool

Iron

Graphite

Gold

All divers need to wear seat belt because of effect of:

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Inertia

Gravity

Car force

Nil

Absolute zero is equal to

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0 K

273

-273 K

373 K

The device used to stop conduction, convention and radiation:

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Thermometer

Thermo flask

Both

Nil

At a height of 30 km, atmospheric pressure is:

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101300 Pa

1000 Pa

10000 Pa

101325 Pa

A temperature rise in the environment disturbs life called:

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Air pollution

Land pollution

Noice pollution

Thermal pollution

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