Question # 1

The forces of attraction present between the molecules of a substance are called ____________ forces.

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Intermolecular forces

Covalent

Ionic

Nil

Carbon exists in ________________ allotropic forms.

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1

2

3

4

1 atm = ?

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1 pascal

760 mm of Hg

1 atm

1 Nm^-2

Carbon forms ____________ bonds in diamonds.

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4

3

6

9

The reverse of evaporation is:

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Boiling

Diffusion

Condensation

Freezing

Diamonds exists in ____________ form.

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Cubic

Linear

Circular

Nil

Density of a gas increases, when its:

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temperature is increased

pressure is increased

volume is kept constant

none of these

Solids are fixed ____________

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Shape

Velocity

Mass

Atoms

Which one of the following gas diffuses faster?

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hydrogen

helium

fluorine

chlorine

T (K) =

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(T) °C + 273

(T) °C -273

(T) °C + 373

(T) °C -373

There are ____________ states of matter

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4

3

2

1

The mathematical formula of Boyle's law is:

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PV = k

PT = k

V = kT

T = Vk

Intermolecular forces are ____________ than chemical bonds.

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Stronger

Weaker

Wqual

Nil

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