Question

Acid rain is caused due to which gas?

• A. ${\mathrm{NO}}_3$
• B. ${\mathrm{SO}}_2$
• C. ${\mathrm{SO}}_3$
• D. ${\mathrm{CO}}_2$

Answer 1

The correct option is B

${\mathrm{SO}}_2$

The explanation for the correct answer:

(B) -

• Acid Rain is defined as the precipitation of acid in the form of rain.
• When atmospheric pollutants like oxides of nitrogen and sulphur react with rainwater and come down with the rain, this results in acid rain.
• The causes of acid rain are Sulphur and Nitrogen particles which get mixed with the wet components of rain.
• The two strong acids present in acid rain are nitrogen oxide and sulphur dioxide.
• These two gases react with water in the atmosphere and oxygen in the air to form sulphuric acid and nitric acid.

The explanation for the correct answer:

(A) -

• Inorganic nitrate is an endogenously produced food product that appears to have a critical role in blood pressure and cardiovascular health management, which is not causing acid rain.

(C) -

• It is used as a bleaching agent
• It is used as a catalyst in the oxidation reaction of sulphur dioxide to sulphur trioxide.
• It is used as an essential reagent in sulfonation reactions.

(D) -

• Carbon dioxide is used as a fire extinguisher.
• It is an important gas in the greenhouse effect.
• It is used in the preservation of fruits.

Therefore, the correct option is B,i.e., acid rain is caused due to ${\mathrm{SO}}_2$(Sulphur dioxide) gas.