Exfoliation is a process in ___________.

chemical weathering

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biological weathering

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mechanical weathering

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None of these

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Solution

The correct option is B mechanical weathering
The repeated heating and cooling exerts stress on the outer layers of rocks, which can cause their outer layers to peel off in thin sheets. The process of peeling off is also called exfoliation and it is a mechanical process. Over time, sheets of rock break away from the exposed rocks along the fractures, a process known as exfoliation. Exfoliation due to pressure release is also known as "sheeting". Retreat of an overlying glacier can also lead to exfoliation due to pressure release.

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