Question

Which of the following are correct Greenhouse gases?

(a) Water Vapour, Oxygen, Methane

(b) Nitrogen oxide, Oxygen, Carbon Tetrachloride

(c) Ozone, Carbon Tetrachloride, Methane

(d) Water Vapour, Carbon Tetrachloride, Nitrogen oxide

1. Only (a) correct
2. Only (c) and (d) are correct
3. Only (a) and (d) are correct
4. Only (d) is correct

Answer 1

Correct Answer - Option 2 : Only (c) and (d) are correct

The Correct answer is Only (c) and (d) are correct.

• The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere.
• Radiatively active gases (i.e. greenhouse gases) in a planet's atmosphere radiate energy in all directions. Part of this radiation is directed towards the surface, thus warming it.
• The intensity of downward radiation – that is, the strength of the greenhouse effect – depends on the number of greenhouse gases that the atmosphere contains. The temperature rises until the intensity of upward radiation from the surface, thus cooling it, balances the downward flow of energy.

The Greenhouse Gases are

1. Carbon Dioxide 
2. Water Vapour,
3. Nitrogen Oxide (N₂O),
4. Methane
5. Nitrogen oxide
6. Ozone
7. Fluorinated Gases
8. Black Carbon
9. Carbon Tetrachloride