Which of the following is true about acid rain?
a. it is more acidic that normal rain.
b. it is less acidic than normal rain.
c. all rain is acid rain.
d. there is no such thing as acid rain.

Ans.

Acid rain can be defined as rainfall, which becomes acidic due to atmospheric pollution. The main reason for acidic rain is industrial burning of fossil fuels ,coal, and vehicle pollution that release gases having nitrogen and sulfur oxides.

These compounds combine with atmospheric water and form acid that leads to formation of acid rain (more acidic than normal rain). The normal rain shows pH value of 5-5.6, while pH value of acid rain is around 4.

Thus, the correct answer is option (a).

answer; ////increased water pollution; ///////////////////////