Which of the following gases were covered under the Kyoto Protocol? Choose the correct answer from the options given below.

1.Carbon dioxide (CO2)

2.Methane (CH4)

3.Nitrogen dioxide (NO2)

4.Nitrous oxide (N2O)

5.Sulphur dioxide (SO2)

A1, 2 and 4 only ✓ Correct

B1, 2 and 3 only

C2, 3 and 4 only

D3, 4 and 5 only

Correct answer: (A) 1, 2 and 4 only

Explanation

The Kyoto Protocol capped six greenhouse gases, and among those listed carbon dioxide, methane and nitrous oxide qualify.

Statement 1 is right: carbon dioxide is the principal greenhouse gas it controls.

Statement 2 is right: methane is a covered gas with high warming power.

Statement 3 is wrong: nitrogen dioxide is an air pollutant, not one of the Kyoto gases.

Statement 4 is right: nitrous oxide is included among the six controlled gases.

Statement 5 is wrong: sulphur dioxide causes acid rain and is not a Kyoto greenhouse gas.

The other Kyoto gases are the fluorinated HFCs, PFCs and sulphur hexafluoride.

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