CBSE Questions for Class 7 Chemistry Water A Precious Resource Quiz 4 - MCQExams.com

Largest amount of fresh water is found in:
  • Lakes and streams
  • Underground
  • Polar ice and glaciers
  • Rivers
What happens if it doesn't rain for a long time?
  • Ponds and wells dry up.
  • Level of groundwater increases.
  • There is no shortage of water.
  • It causes water pollution.
Total earth's surface covered by water is :
  • 71%
  • 60%
  • 85%
  • 50%
Clouds are:
  • Tiny drops of water floating in the air
  • Mixture of dust and water vapour
  • Particles of water vapour
  • Raindrops in the air
Water in our tap comes from 
  • River
  • Lake
  • Well
  • All of the above
The ultimate source of water on the earth is 
  • oceans and seas
  • spring and wells
  • rivers and lakes
  • rain
During evaporation of liquid
  • The temperature of the liquid rises
  • The temperature of liquid falls
  • The temperature of liquid remains undefined
  • The liquid molecules becomes inert
State whether the following statement is true or false. If false, write the correct statement.
The total amount of water on Earth remains the same.
  • True
  • False
State whether the following statement is true or false.
Well water exists below the impervious rocky layers of earth.
  • True
  • False
Mark ‘True’ if the statement is true and 'False' if it is false:
The fresh water stored in the ground is much more than that present in the rivers and lakes of the world.
  • True
  • False
Mark True if the statement is true and 'False' if it is false:
Water shortage is a problem faced only by people living in rural areas.
  • True
  • False
How many portion of the earth is covered with water?
  • $$ 3/4 $$
  • $$ 1/2 $$
  • $$ 1/4 $$
  • $$1/3 $$
Water evaporates into air from oceans, rivers and lakes but not from the soil.
  • True
  • False
Which of the following will lead to reduction in availability of ground water?
  • Plantation
  • Rain water harvesting
  • Constructing more lakes
  • Building concrete roads
The circulation of water between ocean and land is known as the:
  • Oxygen cycle
  • Water cycle
  • Nitrogen cycle
  • None of these
The process falling water in the form of rain, snow or hail is called:
  • Sublimation
  • Evaporation
  • Condensation
  • Precipitation
Water vapour condenses to form tiny droplets of water in the upper layer of air where it is cooler.
  • True
  • False
Mark ‘True’ if the statement is true and 'False' if it is false:

Water from rivers is the only source for irrigation in the fields.
  • True
  • False
The evaporation of water takes place only in sunlight 
  • True
  • False
Choose the correct option to complete the following sentence.

The total water______________
  • in the lakes and rivers of the world remains constant.
  • under the ground remains constant.
  • in the seas and oceans of the world remains constant.
  • All of these
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