Available Answers

1. 1.

   Choose and write the correct answer (MCQs) :

   1. The purest form of natural water is:
      1. rainwater
      2. groundwater
      3. surface water
      4. sea water
   2. Water can dissolve :
      1. solids only
      2. solids and liquids only
      3. solid, liquids and gases
      4. liquids only
   3. Water from which source is clean and safe to drink:
      1. groundwater
      2. lake water
      3. river water
      4. ocean water
   4. A gas that only slightly soluble in water is:
      1. CO₂
      2. chlorine
      3. oxygen
      4. ammonia
   5. Water scarcity is caused due to:
      1. population growth
      2. water
      3. non melting of snow
      4. rainfall
2. 2.

   Fill in the blanks:

   1. Water is a  _______________ solvent.
   2. Three forms of water are _______________, _______________ and _______________.
   3. Underground water is also called _______________.
   4. Only _______________ per cent of the available water on earth is fresh water.
   5. Water for domestic use comes mainly from _______________ through _______________.
   6. In the water cycle, water circulates continually between the _______________ and _______________.
3. 3.

   Write T for true or F for false:

   1. Groundwater is generally free from suspended  impurities.
   2. Rain water does not soak into the ground.
   3. Agriculture depends on rain water.
   4. Rain is ultimate source of water on land.
   5. 71% of earth's surface is coverd with water.
4. 4.

   Match the column A with column B:

   A	B
   1. In filtration	a. Technique of watering plants
   2. Aquifer	b. Using rain water for recharging
   3. Drip irrigation	c. Underground water
   4. Rain water harvesting	d. Seeping of water into the ground

    

5. 5.

   Discuss the major sources of water?
6. 6.

   What is water scarcity and how has it affected people's life?