Question # 1

Which is kept constant in the Charle's law:

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Pressure

Temperature

Volume

Mass

The vapour pressure of a liquid increase with the:

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increase pressure

increase of temperature

increase of intermolecular forces

increase of polarity of molecules

The absolute zero means:

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273.15 °C

-273.15 °C

0 °C

-373.15 °C

Effusion is a property of:

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Gases

LIquids

Solids

Plasma

The escape of gaseous molecules one by one is called ____________.

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Diffusion

Effusion

A & b

Nil

Bucky molecules have ________________ c-atoms.

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20-60

20-90

40-60

40-100

Which one of the following gas diffuses faster?

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hydrogen

helium

fluorine

chlorine

Density of a gas increases, when its:

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temperature is increased

pressure is increased

volume is kept constant

none of these

When temperature of water drops to ____________ °C it convert onto ice.

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0

-2

-1

1

1 atm = ?

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1 pascal

760 mm of Hg

1 atm

1 Nm^-2

P1V1 = P2V2 is mathematical form of ____________ law.

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Bohr's

Charles

Boyle's

Nil

____________ solids are arranged in 3 dimension.

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Crystalline

Amorphous

Both

None

Which gas will diffuse faster than others?

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Hydrogen

Oxygen

Chlorine

Nitrogen

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