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प्रश्न
Describe chemical weathering, mentioning the processes involved in it.
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उत्तर
Chemical weathering refers to the breakdown of rocks through chemical reactions that alter the mineral composition of the rocks. This process is largely driven by water, oxygen, carbon dioxide, and organic acids. The four main processes involved in chemical weathering are:
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Solution: Minerals like salts, especially soluble minerals, dissolve in water, breaking down the rock.
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Carbonation: Carbon dioxide reacts with minerals like calcium carbonate (in limestone) to form carbonic acid, which dissolves the minerals.
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Oxidation: Oxygen reacts with iron-rich minerals in the rocks (e.g., haematite or magnetite), causing them to form iron oxide (rust), weakening the rock structure.
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Hydration: Water interacts with minerals in rocks, causing them to absorb water, expand, and become heavier, which leads to the breakdown of the rock.
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संबंधित प्रश्न
What are the main types of chemical weathering?
Distinguish between the following pair
Hydration and solution
Discuss the role of water in the process of chemical weathering.
Name the four processes involved in chemical weathering.
Name few well known physical features caused by chemical weathering.
Distinguish between the following:
Mechanical Weathering’ and ‘Chemical Weathering’.
Distinguish between :
Physical Weathering and Chemical Weathering.
Name the different processes of chemical weathering.
Mixing of water with the atmospheric carbon-di-oxide is known as ______.
Statement: The Agents of chemical weathering are Oxygen, Carbon dioxide, and Hydrogen.
Reason: Chemical weathering is predominantly high in the hot and humid regions.
