GEOLOGY

Detailed explanation-1: -Ans. The answer is Nitrogen. Greenhouse gases are a subset of gases that trap heat in the Earth’s atmosphere.

Detailed explanation-2: -Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3).

Detailed explanation-3: -The various greenhouse gases are carbon dioxide, methane, chlorofluorocarbon, ozone, nitrous oxide, and water vapor. Hence the gas which is not a greenhouse gas is nitrogen and the correct answer for the given question is option d).

Detailed explanation-4: -Carbon dioxide, methane and water vapour are greenhouse gases. But the main constituents of the atmosphere nitrogen and oxygen are not greenhouse gases.

Detailed explanation-5: -O2 and N2 are not greenhouse gases. All molecules of three or more atoms are infrared active. A greenhouse gas has a stronger impact on the radiative balance of the earth if it interacts with light in the middle of the earth-light spectrum.