Consider the following statements: Statement-I: Rainfall is one of the reasons for weathering of rocks.…
Consider the following statements: Statement-I: Rainfall is one of the reasons for weathering of rocks. Statement II: Rain water contains carbon dioxide in solution. Statement-III: Rain water contains atmospheric oxygen. Which one of the following is correct in respect of the above statements?
Both Statement-II and Statement-III are correct and both of them explain Statement-I
Both Statement-II and Statement-III are correct, but only one of them explains Statement-I
Only one of the Statements II and III is correct and that explains Statement-I
Neither Statement-II nor Statement-III is correct
Solution
Rain water contains both dissolved CO2 (forming weak carbonic acid causing chemical weathering) and dissolved oxygen (causing oxidation/rusting weathering). Both Statements II and III are correct and both explain Statement I.