CBSE Class 3 Science Water as a Resource MCQs

Question: About three fourths of Earth’s surface is covered with

a) water

b) land

c) sand

Answer: water

Question: Water is important for

a) both

b) animals

c) plants

Answer: both

Question: Some animals such as fish and plants such as tape grass need a lot of

a) water

b) mud

c) grass

Answer: water

Question: Camel and cactus can live in

a) deserts

b) island

c) water

Answer: deserts

Question: __________ is present in oceans, seas, rivers, lakes, ponds

a) water

b) ice

c) steam

Answer: water

Question: In __________ form it is present as ice in very cold places such as Himalayan mountain

a) solid

b) liquid

c) gas

Answer: solid

Question: In gas form it is present as ___________ in air and as clouds

a) water vapour

b) ice

c) liquid

Answer: water vapour

Question: Ice on heating changes to

a) water

b) steam

c) ice

Answer: water

Question: Water on heating changes into

a) water vapour

b) ice

c) none of these

Answer: water vapour

Question: Waster vapour on cooling changes into

a) water

b) ice

c) steam

Answer: water

Question: Water on cooling changes into

a) ice

b) steam

c) fog

Answer: ice

Question: Ice heating water

a) melting

b) evaporation

c) freezing

Answer: melting

Question: Water heating water vapour

a) evaporation

b) melting

c) condensation

Answer: evaporation

Question: Water vapour cooling water

a) condensation

b) melting

c) evaporation

Answer: condensation

Question: Water cooling Ice

a) freezing

b) condensation

c) evaporation

Answer: freezing

Question: Water in seas, lakes, rivers, ponds and streams __________ because of the heat of the sun.

a) evaporation

b) freezes

c) condenses

Answer: evaporation

Question: The air higher up is

a) cool

b) very hot

c) hot

Answer: cool

Question: Drops of water together form a

a) cloud

b) rainbow

c) star

Answer: cloud

Question: When clouds becomes too heavy with water, the water drops fall as

a) rain

b) cloud

c) sea

Answer: rain

Question: Salts are ___________ impurities

a) insoluble

b) soluble

c) germs

Answer: insoluble

Question: Sand and mud are ___________ impurities

a) insoluble

b) soluble

c) germs

Answer: insoluble

Question: The small harmful living things that are present in dirty water

a) germs

b) minerals

c) plants

Answer: germs

Question: The special chemical which is used to purify water

a) carbon di oxide

b) L.P.G

c) chlorine

Answer: carbon di oxide

Question: Rainwater harvesting is a method of ___________ rainwater for later use.

a) storing

b) wasting

c) both

Answer: storing