Available Answers

1. 1.

   Which is the most abundant compound on the earth? Name three of its main uses.

2. 2.

   Name one biochemical reaction in which water takes part.

3. 3.

   The water requirement of wheat is 500. What does this mean?

4. 4.

   Name any three purposes for which water is used in industry.

5. 5.

   How is a reservoir of groundwater formed?

6. 6.

   What do you mean by precipitation?