Question # 1

Change of a solid object into liquid state on heating is called.

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Freezing

Melting

Boiling

Evaporation

Boiling point of wate is.

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0 oC

0 oF

100 oC

100 oF

Changing of substances directly from solid state to gaseous state on beating is termed as.

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Boiling

Diffusion

Melting

Sublimation

Particles move freely in all directions in

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Solids

Liquids

gases

None of these

Solids and liquid objects cannot be compressed easily as their particles are

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Closely packed

Lossely packed

Lacking spaces among them

Scattered irregularly

Particles are arragned on regular patterns and packed strongly together in.

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gas

liquid

Solid

None of these

When a gas condenses, it becomes a

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Solid

Liquid

Crystal

Another gas

There are strong forces of attraction between the particles of.

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Solids

Liquids

gases

all of these

Which of the following is opposite the boiling?

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Evaporation

Melting

Condensation

Freezing

The rate of diffusion depends on.

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Size of the particles

Temperature

Size of space between particles

All of the above

Liquid have fix

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Shape

Volume

Arrangement

All of these

Movement of particles from an area where they are more to an area where they are less.

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Boiling

Evaporation

Diffusion

Sublimation

Diffusion takes place in

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Liquids

gases

Both a and b

Solids

Materials taht don't take the shpaed of the container.

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Solids

Liquids

gases

all of these

When a solid object is heated its particles begin to.

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Vibrate fast

Vibrate slowly

Stop vibrating

Move feely

In severe winter, the droplets of water in the atmosphere are frozens called.

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dew

fog

Frost

None of these

The process of changing gas into liquid.

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Melting

Evaporation

Condensation

Freezing

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