Question

Which of the following pollutant gases is not produced both naturally and as a result of industrial activity ? (1) Chlorofluoro carbons (2) Nitrous oxide (3) Methane (4) Carbon dioxide

Answer 1

chlorofluoro carbons

Answer 2

"Chlorofluorocarbons” are the gases that are not produced by industrial activity.

Explanation:

All other given pollutant in the question is produced naturally. While only chlorofluorocarbons are gases which do not consist of any natural source, since they are derived from various reactions or as a side product. These gases that contain chlorine, fluorine and carbons. They spread out in the atmosphere with the leakage from the refrigeration etc.It has a great affect to the environment by pollution and also applicable for green house effect causing ground level ozone.