The atmosphere - OCR Gateway

1

What formed the early atmosphere?

2

Where did the oceans come from?

3

What process released oxygen and absorbed carbon dioxide, causing changes to the atmosphere?

4

Which gas is present in the modern atmosphere in the greatest amount?

5

Which is a correct statement about incomplete combustion of hydrocarbon fuels?

6

When fuel burns inside a car engine at high temperatures, which gas becomes oxidised?

7

Where does sulfur dioxide come from during combustion reactions of hydrocarbon fuels?

8

Which of the following is not a greenhouse gas?

9

Which of the following produces large amounts of atmospheric methane?

10

Why is chlorine added to drinking water during the purification process?