Which of the following gases is not known as greenhouse gas?

Correct option is B

Argon is not a greenhouse gas. Greenhouse gases, such as methane, carbon dioxide, and nitrous oxide, trap heat in the earth's atmosphere, contributing to global warming.
Important Key Points:
1. Greenhouse Gases: Include carbon dioxide, methane, and nitrous oxide.
2. Global Warming: These gases trap heat and contribute to climate change.
3. Atmospheric Composition: Argon is an inert gas and does not contribute to the greenhouse effect.
4. Heat Trapping: Greenhouse gases trap infrared radiation, leading to a warming effect.
5. Environmental Impact: Increased greenhouse gas emissions lead to global temperature rise.
6. Human Activities: Burning fossil fuels, deforestation, and industrial activities increase greenhouse gases.
7. Climate Policies: International agreements like the Paris Agreement aim to reduce greenhouse gas emissions.
Information Booster:
 Methane: A potent greenhouse gas with significant warming potential.
 Carbon Dioxide: The most prevalent greenhouse gas from human activities.
 Nitrous Oxide: Emitted from agricultural and industrial activities, also a greenhouse gas.
 Argon: An inert gas, not contributing to the greenhouse effect.