OAV-WATER (PRACTICE SET-2)

Questions in this test

1. Collection of rainwater in large tanks for future use is called
2. ____ are condensed water vapour.
3. ___ is needed to convert water into water vapour .
4. What is the effect of excessive rain?
5. Water is required in very large amount for
6. About _______ part of the Earth is covered with water.
7. Which of the following is a source of saline water?
8. Fog appearing in a cold winter morning, due to
9. Black board dries up after wiping, it is due to
10. What occurs when it does not rain in an area for a long period?