Question

Which of the following is not a pollutant?
(a) H2
(b) CO
(c) NO2
(d) SO2

Answer 1

Answer:

Hi

The correct ans is h2

Answer 2

Answer:

(a) H2

Explanation:

H2 is not a pollutant. Pollutants are those substances which affect our environment badly. All the options given in the question, H2, CO, NO2, and SO2, among all of them only H2 is not a pollutant rest all, are pollutants, because they affect our environment in the wrong way. Carbon mono oxide, carbon dioxide and sulfur dioxide all are poisonous gases. Extra presence of these gases in the environment cause harmful effects on living beings.