Question

Which of the following is not a greenhouse gas?

• A. Water vapour
• B. Carbon monoxide
• C. Methane
• D. Oxygen

Answer 1

Answer: (D)

Oxygen

Greenhouse gases are those gases that contribute to the greenhouse effect by absorbing infrared radiation. Water vapour, Carbon Monoxide, Methane and CFCs (chlorofluorocarbons) are Greenhouse gases. These gases leads to Greenhouse effect which 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 its atmosphere.

Hence, the correct answer is option D.