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Which one of the following is not an example of chemical weathering

June 1, 2025 by rawan239

Which one of the following is not an example of chemical weathering ?

Acid action

Hydrolysis

Salt Crystal Growth

Oxidation

This question was previously asked in

UPSC CDS-2 – 2024

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Chemical weathering involves processes that change the chemical composition of rocks and minerals. Acid action (like carbonation, where carbonic acid dissolves minerals), Hydrolysis (reaction of water with minerals), and Oxidation (reaction with oxygen) are all examples of chemical weathering. Salt Crystal Growth (also known as salt weathering or haloclasty) is a process where salt crystals grow in pores and cracks within rocks, exerting pressure that forces the rock apart. This is a physical process that breaks down the rock without changing its chemical composition, making it an example of physical or mechanical weathering, not chemical weathering.

Weathering is the breakdown of rocks, soil, and minerals through contact with the Earth’s atmosphere, water, and biological organisms. It is broadly classified into physical (mechanical), chemical, and biological weathering.

Salt weathering is particularly effective in arid and coastal environments where evaporation leads to the crystallization of dissolved salts within the rock pores.

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