Question

Match column-I with Column-II and select the correct answer using the codes given below.

Column-I	Column-II
A. Carbon monoxide	I. Qualitative Pollutant
B. DDT	II. Freon
C. Chlorofluoro-methane	III. Lung cancer
D. Smoking	IV. Quantitative pollutant
E. Acid rain	V. Nitrogen and sulfur oxides

A. A-II; B-I; C-IV; D-V; E-III
B. A-IV; B-I; C-II; D-III; E-V
C. A-III; B-II; C-IV; D-I; E-V
D. A- V; B-III; C-I; D-II; E-IV

Answer 1

Hint: Carbon monoxide is a pollutant, but it occurs naturally and can be termed as a quantitative pollutant. DDT does not occur naturally and is referred to as a qualitative pollutant. Chlorofluoro-methane is commonly known as Freon. Smoking leads to lung cancer. Nitrogen and sulfur oxides react with rainwater and are termed acid rain.

Complete step-by-step method:

Quantitative pollutants are naturally occurring substances in the environment that gain the status of pollutants when their concentration increases due to man's careless activities. Carbon monoxide is present in greater quantities than usual in the environment and is thus classified as a quantitative pollutant.
Qualitative pollutants are substances that do not naturally occur in nature but are introduced by man, such as insecticides. DDT, also recognized as Dichloro-Diphenyl Trichloroethane, is an organic compound that is colourless, tasteless, and odourless and is used as an insecticide or pesticide. Othmar Zeidler, an Austrian chemist, created DDT for the first time in 1874.
The hydrochlorofluorocarbon is chlorofluoromethane, also known as Freon 31. It is a flammable gas that is colourless and odourless.
The conduct of inhaling and exhaling the fumes of burning plant substances is referred to as smoking. Individuals who smoke seem to be 15 to 30 times more likely than nonsmokers to develop lung cancer. The longer and more frequently you smoke, the greater you’re at risk.
In its most basic form, acid rain can be defined as the precipitation of acid in the form of rain. Acid Rain occurs when atmospheric pollutants such as nitrogen oxides and sulfur oxides react with rainwater and fall as rain.

Hence, from all the above information we can conclude that option B is correct.

Note: Carbon monoxide, nitrogen and sulfur oxides are air pollutants and formed by the combustion of fossil fuels. This can lead to confusion when choosing the correct match for carbon monoxide. Note that here carbon monoxide acts as a quantitative pollutant whereas acid rain matches with nitrogen oxide and sulfur oxide.