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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
Discuss the role of water in the process of chemical weathering.
Give two differences between physical and chemical weathering.
Name the four processes involved in chemical weathering.
Describe chemical weathering, mentioning the processes involved in it.
Distinguish between the following:
Mechanical Weathering’ and ‘Chemical Weathering’.
Rewrite the following sentence, choosing the right word from the options given below:
_______ is the chemical process in which some of the minerals are dissolved by the water.
Distinguish between :
Physical Weathering and 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.
