Detailed explanation and options for the selected question.
Consider the following statements about rainwater: Statement-I: Rainfall contributes to the weathering of rocks. Statement-II: Rainwater contains dissolved carbon dioxide. Statement-III: Rainwater contains atmospheric oxygen. Which is correct?
A.
Both Statement-II and Statement-III are correct and both explain Statement-I
B.
Both Statement-II and Statement-III are correct but only one explains Statement-I
C.
Only one of Statement-II and Statement-III is correct and that explains Statement-I
D.
Neither Statement-II nor Statement-III is correct
Explanation:
Both dissolved CO2 and atmospheric oxygen in rainwater contribute to rock weathering, though not all aspects fully explain it.