OAV-AIR, ATMOSPHERE, AND WEATHER (PRACTICE SET-1)

Questions in this test

1. The gas used for combustion is
2. Air pressure is measured by
3. Air contains ______ of nitrogen.
4. The barometer is used to
5. Which of the following is the most ideal layer of the atmosphere for flying aeroplanes?
6. The layer closest to Earth’s surface is the
7. Which layer of the atmosphere contains the ozone?
8. ______ protects us from the harmful rays of the sun.
9. _______ refers to all the water on the earth’s surface.
10. ______ is the layer of atmosphere in which clouds are formed.