MCQ Questions

Question No. 1

Fill in the blanks.

Answer :

(1) The change of state from solid to liquid at fixed temperature is called ____________.

(2) When a liquid freezes the kinetic energy of its molecules ____________.

(3) Properties of compressibility and fluidity is present in ____________.

(4) The space between two molecules is called ____________.

(5) In gases the intermolecular attraction is ____________.

(6) When water changes from liquid to vapour state its volume ____________.

(7) In deposition the state of the substance will ____________.

(8) On a windy day evaporation from a pond will ____________.

(10) When change of state is happening the kinetic energy of the system ____________.

(9) Frost formation on leaves is an example of ____________.

Question No. 2

Short answer type questions.

Question No. 3

Long answer type questions.

Question No. 4

Match the column (Physical changes with the correct description)

Answer :

Question No. 5

State True or False and correct the false statement.

Question No. 6

In Brownian movement the movement happens in :

Answer :

The container in which the liquid is kept

The particles in a solid

The particles of gases only

The particles in the fluid

Question No. 7

When condensation happens –

Answer :

The volume of the substance in the gaseous state increases.

The attraction between the particles increases.

The particles begin to repel each other vigorously.

The volume of the substance in the gaseous state decreases.

Question No. 8

Liquids have a fixed volume because –

Answer :

The intermolecular space is small

The intermolecular space is large

The intermolecular force of attraction is less than gases

The intermolecular force of attraction is more than gases

Question No. 9

In case of water the cohesive force is

Answer :

stronger than adhesive force of glass

weaker than the adhesive force of glass

same as adhesive force of glass

Non existent

Question No. 10

Solids and liquids :

Answer :

Have fixed shape

Have fixed volume

Cannot flow

Question No. 11

According to the Kinetic theory of matter –

Answer :

Matter occupies space

Matter is made of tiny particles which move

Matter can be created or destroyed

Question No. 12

Liquids have a fixed volume because –

Answer :

The intermolecular space is small

The intermolecular space is large

The intermolecular force of attraction is less than gases

The intermolecular force of attraction is more than gases

Question No. 13

Our clothes dry in winter because –

Answer :

of condensation

of evaporation

of Brownian movement

of vaporization

Question No. 14

Which of the following sentences is correct for boiling?

Answer :

Boiling takes place at the bottom of the liquid.

In boiling the kinetic energy of all the particle is the same.

Boiling takes place only at the surface of the liquid

In boiling kinetic energy of the particles is high at the surface.

Question No. 15

Which of the following factors does not affect evaporation of water?

Answer :

Extent of surface area

Wind speed

Surrounding temperature

Insoluble impurities.

Question No. 16

Our clothes dry in winter because –

Answer :

of condensation

of evaporation

of Brownian movement

of vaporization

Question No. 17

When a substance cools down –

Answer :

the intermolecular spaces increase

the intermolecular attraction decreases

the volume of the substance can decrease

the volume of the substance can increase

Chapter

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