Question

No. of gases qualify as a greenhouse gas: $CO,NO,N{O}_2,C{l}_2,H_2,Ne$ :

• A. 2
• B. 3
• C. 4
• D. 1

Answer 1

Answer: (B)

3

Greenhouse gas (sometimes abbreviated 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 green house effect.

The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, nitrogen dioxide and Ozone. So green houses among the given are $CO,NO$ and $N{O}_2$.
So, there are three gases

Hence, option B is correct.