Question

Given below are two statements :

Statement I :

The pH of rain water is normally ~5.6.

Statement II :

If the pH of rain water drops below 5.6, it is called acid rain.

In the light of the above statements, choose the correct answer from the options given below:

(1) Statement I is true but Statement II is false.

(2) Both Statement I and Statement II are false.

(3) Statement I is false but Statement II is true.

(4) Both Statement I and Statement II are true.

Answer 1

(4) Both Statement I and Statement II are true.

Both statements are correct. Normally rain water has pH of 5.6 due to the presence of H⁺ ions formed by the reaction of rain water with carbon dioxide present in the atmosphere.