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UPSC 2024: 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 ?
(a)Both Statement-II and Statement-III are correct and both of them explain Statement-I
(b)Both Statement-II and Statement-III are correct, but only one of them explains Statement-I
(c)Only one of the Statements II and III is correct and that explains Statement-I
(d)Neither Statement-II nor Statement-III is correct
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Not attemptedCorrect Answer: (a) Both Statement-II and Statement-III are correct and both of them explain Statement-I
Rainfall drives both physical and chemical weathering of rocks (Statement I). Rainwater naturally absorbs CO₂ forming weak carbonic acid and it also dissolves atmospheric O₂; both gases participate in chemical reactions (carbonation and oxidation) that enhance weathering, so Statements II and III are correct and together explain Statement I. ([vajiramandravi.com](https://vajiramandravi.com/upsc-exam/consider-the-following-statements-140/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2024 Geography question?▼
The correct answer is option (a): Both Statement-II and Statement-III are correct and both of them explain Statement-I. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physical Geography & Geomorphology question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2024, GS Paper 1, as Question 7. It falls under Geography > Physical Geography & Geomorphology.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Physical Geography & Geomorphology?▼
UPSC has asked 25 questions from Physical Geography & Geomorphology (under Geography) across multiple years. Visit the topic page to see the full list and year-wise trends.