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प्रश्न
Give Reasons:
Chemical weathering is predominant in hot and humid zones.
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उत्तर
- Heat speeds up chemical weathering.
- Minerals can react with oxygen in the atmosphere or water from rain – even occassional rain in arid zones – to change their chemical composition.
- Metallic silicate minerals such as iron containing olivine, oxidize to form hematite, a red coloured iron oxide that coats rocks.
- It is present in desert sands as laterite soil.
- With continuing heat and moisture, hematite hydrates to form a yellow coloured iron oxide, limonite.
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संबंधित प्रश्न
Identify the type of weathering from the given description.
The rock rusts.
Distinguish between the following pair
Hydration and solution
Name the four processes involved in chemical weathering.
Say whether the following is ‘True’ or ‘False’.
In Polar regions there is no chemical weathering.
Name few well known physical features caused by chemical weathering.
Distinguish between the following :
Solution and Hydration
Name the different processes of chemical weathering.
Give reasons for the following :
Presence of water aids chemical weathering.
Distinguish between
Oxidation and Carbonation
Statement: The Agents of chemical weathering are Oxygen, Carbon dioxide, and Hydrogen.
Reason: Chemical weathering is predominantly high in the hot and humid regions.
