Q. Which among the following is/are correctly matched? Mechanical weathering - includes exfoliation, solution, frost wedging, salt wedging and temperature changes. Chemical weathering - includes  carbonation, hydration, hydrolysis, oxidation and solution. Select the correct code from the options given below:
Answer: [B] Only 2
Notes: Mechanical (physical) weathering is the physical disintegration and reduction in the size of the rocks without changing their chemical composition. 
It includes exfoliation, frost wedging, salt wedging, temperature changes and abrasion

Chemical weathering decomposes, dissolves, alters, or weakens the rock through chemical processes to form residual materials.
It includes carbonation, hydration, hydrolysis, oxidation and solution.

 

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