EASY
Earn 100

What are the three forms of water?

Important Questions on Water: A Precious Resource

EASY
Water expands on reducing its temperature below _____ °C.
MEDIUM

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

Column A Column B
1. A mixture of water vapor, dust particles and air on high altitude. (a) Drought
2. Journey of water from ocean to land and back to the ocean (b) Water harvesting
3. Collection of rooftop rainwater. (c) Cloud
4.  A situation caused by no rain for a year. (d) Water cycle
MEDIUM
Why is water called a universal solvent?
EASY

Write ‘S’ for serious and ‘J’ for joking. 

Ice cubes are the solid form of water. 

MEDIUM

Choose the correct word from the list given below:

List: drought, evaporation, condensation, gravity, dust.

The condensation in clouds takes place on _____ particles.

EASY
Why does the water vapour condense when it reaches high up in the atmosphere?
HARD
How can you demonstrate transpiration in plants? 
EASY
Why do we call water the ‘universal solvent’?
EASY

Write whether heating or cooling is required to carry out this change. Write 'H' for heating and 'C' for cooling.

Steam water

EASY
Distinguish between evaporation and condensation?
EASY
Water vapour becomes cool as it rises up in the air.
EASY

Fill in the blank. Use the words given below.

(Scientists, Science, evaporates, weighs, water)

The water _____ on heating.

EASY
When you cool water, it changes to
EASY

What happens-

when water is heated?

MEDIUM

Choose the correct word from the list given below: 

List: drought, evaporation, condensation, gravity, dust.

Clouds are formed due to the _____ of water vapour.

MEDIUM
When it does not rain on a cloudy day, does it mean that the clouds do not contain water vapour? Why or why not?
EASY
How can you change water to ice?