Question

Q. With reference to acid rain, consider the following :

Which of the above given are the basic constituents of acid rain?

• A.
  1 and 3 only
• B.
  1 only
• C.
  1 and 2 only
• D.
  1,2 and 3

Answer 1

The correct option is C

1 and 2 only
Explanation:

If atmospheric pollutants such as nitrogen oxides and sulphur react with rainwater and come down with the rain, it results in Acid Rain. The causes of acid rain are particles of sulfur and nitrogen that are mixed with the wet components of rain.

Statement 1 is correct: The basic constituents of acid rain that make it acidic are: Nitrogen dioxide, carbon dioxide, sulphur dioxide and carbonic acid.

Statement 2 is correct: The oxides of nitrogen and sulphur, when released as pollutants in the atmosphere, dissolve in rain drops to form carbonic acid, Nitric acid and sulphuric acid.

Statement 3 is incorrect: Nitrous oxide is a neutral oxide of Nitrogen. Neutral oxides are those oxides which show neither basic or acidic properties when they react with water. It is emitted during agricultural activities, combustion of fossil fuels and solid waste. Carbon monoxide (CO) which is only slightly soluble in water is also a neutral oxide.