ICSE ICSE Class 8 - CISCE Question Bank Solutions

All kinds of matter

1. occupy space and have definite mass
2. have mass and definite shape
3. can change their states
4. have definite volume

A kind of matter which can sublinje is

1. water
2. plastic
3. milk
4. iodine

A substance which can change its state

1. wood
2. oxygen
3. paper
4. cloth

 The process by which a solid changes into a liquid is called

1. freezing
2. melting
3. condensation
4. evaporation

A solid is a state of matter that has

1. no definite shape.
2. large intermolecuiar space.
3. high intermolecuiar force of attraction.
4. no definite volume.

Which of the following is a property of the liquids ?

1. they can flow
2. they are malleable
3. they have a definite shape
4. they are rigid

 Gases

1. cannot be compressed easily,
2. occupy the entire space of the container.
3. have definite shapes.
4. cannot flow.

State the law of conservation of mass.

Fill in the blank

Hydrogen is ..................... than air.

Fill in the blank

Hydrogen is ...................soluble in water.

A metal ______ hydrogen in the reactivity series gives hydrogen with ______.

Fill in the blank

Hydrogen reacts with metal oxides to form ............and....................

Give reason for the following:

Though hydrogen is lighter than air it cannot be collected by downward displacement of air.

 Name the following:

Two metals which give hydrogen with cold water.

Match the statements in Column A with those in Column B.

Multiple Choice Question

The metal which reacts with cold water to produce hydrogen is

Multiple Choice Question

Water gas is a mixture of

MULTIPLE CHOICE QUESTIONS

Hydrogen burns in oxygen to form

1. hydrogen sulphide
2. nitrates
3. water
4. ammonia

FILL IN THE BLANK

........................... means ‘maker of water’ in Greek.

FILL IN THE BLANK

In electrolysis of water, dilute sulphuric acid is added to increase ..................of water.