Carbon Monoxide:
1. is the result of incomplete combustion of fossil fuels
2. has a foul smell
3. is one of the ozone depleting substances
4. contributes significantly to the greenhouse effect
Select the correct statements from the codes given below:

Answer: [A] Only 1

First statement is correct. Second statement is not correct. Third is also not correct, and regarding fourth statement, please note that although molecules containing two atoms of different elements such as carbon monoxide (CO) or hydrogen chloride (Hel) absorb IR, these molecules are short-lived in the atmosphere owing to their reactivity and solubility. Because they do not contribute significantly to the greenhouse effect, they are usually omitted when discussing greenhouse gases.

This question is a part of GKToday's Integrated IAS General Studies Module