Science & Technology Prelims Question

A group of weathering processes, viz., solution, carbonation, hydration, oxidation and reduction act on the rocks to decompose, dissolve or reduce them to a fine clastic state through chemical reactions by oxygen, surface and/or soil water and other acids.
Solution: When something is dissolved in water or acids, the water or acid with dissolved contents is called solution. Minerals like calcium carbonate and calcium magnesium bicarbonate present in limestones are soluble in water containing carbonic acid and are carried away in water as solution.
Carbonation: Carbonation is the reaction of carbonate and bicarbonate with minerals and is a common process helping the breaking down of feldspars and carbonate minerals.
Hydration: Hydration is the chemical addition of water. Minerals take up water and expand. This expansion causes an increase in the volume of the material itself or the rock.

A group of weathering processes, viz., solution, carbonation, hydration, oxidation and reduction act on the rocks to decompose, dissolve or reduce them to a fine clastic state through chemical reactions by oxygen, surface and/or soil water and other acids.
Solution: When something is dissolved in water or acids, the water or acid with dissolved contents is called solution. Minerals like calcium carbonate and calcium magnesium bicarbonate present in limestones are soluble in water containing carbonic acid and are carried away in water as solution.
Carbonation: Carbonation is the reaction of carbonate and bicarbonate with minerals and is a common process helping the breaking down of feldspars and carbonate minerals.
Hydration: Hydration is the chemical addition of water. Minerals take up water and expand. This expansion causes an increase in the volume of the material itself or the rock.

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