Question

Which of the following is the most serious pollutant among sulphur compounds?

• A. Oxides of sulphur
• B. Carbonyl sulphide
• C. Carbon disulphide
• D. Sulphates

Answer 1

The correct option is A Oxides of sulphur

A. Oxides of sulphur react with water in the atmosphere and forms sulphuric acid which causes the rain water to get acidic and thus, oxides of sulphur causes acid rain.

B. Carbonyl sulphide is a colourless gas which decomposes into carbon dioxide and carbon disulphide.

C. Carbon disulphide is a colourless volatile liquid in its pure form. It is not considered to cause any type of pollution.

D. Sulphates are the polyatomic ions derived from sulphur and oxygen. Sulphates generally cause water pollution.

Hence, the most serious pollutant among sulphur compounds is Oxides of sulphur. So, the correct answer is 'Oxides of sulphur'.