Class 9 Chemistry MCQ Chapter 5

Graphite is ___________

Hard

Nil

Soft

Nil

Carbon exists in ________________ allotropic forms.

1

2

3

4

Which one of the following does not affect the boiling point?

intermolecular forces

external pressure

nature of liquid

initial temperature of liquid

Force per unit area is called:

volume

pressure

weight

density

Effusion is a property of:

Gases

LIquids

Solids

Plasma

Which has lowest density?

liquids

Solids

Gases

Plasma

The transition temperature of sulphur is:

96xa0°C

250xa0°C

18xa0°C

218xa0°C

The mathematical formula of Boyle’s law is:

PV = k

PT = k

V = kT

T = Vk

The mathematical formula of Charle’s law is:

PV = k

V/T = k

P = VT

T/V = k

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

Intermolecular forces

Covalent

Ionic

Nil