General Science class 6 chapter 6 Air mcqs with answers

1. Which gas is needed for combustion…………………..?

2. Who discovered oxygen …………………..?

3. Which gas is called inactive gas if compared to oxygen …………………..?

4. Which gas was called ( azote ) meaning without life …………………..?

5. The process by which nitrogen gas is converted into plants and animal protein and maintained in the atmosphere is called …………………..

6. The swellings on the roots of the leguminous plants, take in nitrogen and convert it into nitrates. This is called …………………..

7. Air is made up of many gases, which gas is found in the greatest amount…………………..?

8. Excess of heat from the sun is prevented by …………………..

9. What happens when oil is burnt …………………..?