Identify the correct sequence of processes involved is Chemical weathering of rocks.
(A) Carbonation
(B) Solution
(C) Hydration
(D) Oxidation
(E) Reduction
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (B), (A), (C), (D), (E)
Chemical weathering is described in the standard order solution, carbonation, hydration, oxidation and reduction. In solution minerals simply dissolve in water; in carbonation carbon dioxide dissolved in rain water attacks carbonate rocks such as limestone.
Hydration is the taking up of water by minerals, which makes them swell and crumble, while oxidation and reduction involve the gain and the loss of oxygen, as when iron-bearing rocks rust and turn reddish.