Assertion (A) : The pH of acid rain is less than 5.6. Reason (R) : Carbon dioxide present in the atmosphere dissolves in rain water and forms carbonic acid.

Assertion (A) : The pH of acid rain is less than 5.6. Reason (R) : Car

1.	Assertion (A) : The pH of acid rain is less than 5.6. Reason (R) : Carbon dioxide present in the atmosphere dissolves in rain water and forms carbonic acid.
Answer» Both (A) and (R) are correct and (R) is the correct explanation of (A). Both (A) and (R) are correct but (R) is not the correct explanation of (A). Both (A) and (R) are not correct. (A) is not correct but R is correct. Solution :Due to the PRESENCE of `H^+` ions formed by the reaction of rain water with carbon dioxide PRESENT in the atmosphere, pH of rain water is a 5.6. `H_2 O_((l)) + CO_(2(g)) to H_2 CO_(3(AQ))` `H_2 CO_(3(aq)) hArr H_((aq))^+ to HCO_(3(aq))` When the pH of rain water DROPS below 5.6 it is called acid rain.