SSC MTS 2022 PYQ — Question 46

The correct answer is option 1 i.e. Nitrogen

1. Oxygen and nitrogen are not greenhouse gases, because they are transparent to infrared light. 
2. Nitrogen has no effect on global warming either way because nitrogen is an inert gas that does not react with other substances or affect the climate in any way. Hence, Nitrogen is not a greenhouse gas.

Greenhouse gas (GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone.

Some of the other greenhouse gases are-

1. Carbon dioxide (CO₂)
2. Methane (CH₄)
3. Nitrous oxide (N₂O)
4. Industrial gases:
   • Hydrofluorocarbons (HFCs)
   • Perfluorocarbons (PFCs)
   • Sulfur hexafluoride (SF₆)
   • Nitrogen trifluoride (NF₃)