Question

Acid rain is caused by an increase in the atmospheric concentration of _______.

1. Ozone and dust
2.

SO₂ and NO₂

3. SO and CO
4. CO and CO

Answer 1

Correct Answer - Option 2 :

SO₂ and NO₂

The correct answer is SO2 and NO2.

  

• Acid rain is caused by an increase in the atmospheric concentration of SO₂ and NO₂.
• These mix with water vapour to form sulphuric acid (H2SO4 ) and nitric acid (HNO3) respectively which falls on the earth in the form of acid rain.

 

• When the pH value of regular rainwater goes around 5.7, we call it acid rain.
• The oxides of nitrogen and sulfur are blown away by the wind along with the dust particles.
• They settle on the earth’s surface after coming down in the form of precipitation. 
• Sulfur dioxide and nitrogen dioxide undergo oxidation, and then they react with water resulting in the formation of sulphuric acid and nitric acid respectively.

 

• Effects of Acid Rain
  • Acid rain is very harmful to agriculture, plants, and animals.
  • Acid rain affects agriculture by the way how it alters the composition of the soil.
  • Acid rain causes the corrosion of water pipes, buildings, and monuments made up of stones and metals.