Q. Which of the following is/are not Green House Gases?

1. Nitrous oxide
2. Ozone
3. Sulphur dioxide

Select the correct answer from the codes given below:
Answer: Only 3
Notes: Atmospheric gases like carbon dioxide, methane, nitrous oxide, water vapour, and chlorofluorocarbons are capable of trapping the outgoing infra-red radiation from the earth. The primary greenhouse gases in Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide and ozone.