Question

58. Which of the following sources contribute to occurrence of acid rains?
i) Volcanic eruptions
ii) Thermal Power Plants
iii Burning of coal
iv Automobile exhaust
Options:

• A. a) iii and iv only
  
• B. b) i, iii and v only
  
• C. c) ii and iii only
  
• D. d) i ii iii and iv

Answer 1

The correct option is D d) i ii iii and iv

D)

Explanation:

Acid rain is a mixture of deposited material, both wet and dry, contributed by nitric and sulphuric acids.

Erupting volcanoes contains some chemicals that can cause acid rain. Apart from this, burning of fossil fuels, running of factories and automobiles due to human activities are few other reasons behind this activity.