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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
What are the main types of chemical weathering?
Identify the type of weathering from the given description.
The rock rusts.
Discuss the role of water in the process of chemical weathering.
Give two differences between physical and chemical weathering.
Say whether the following is ‘True’ or ‘False’.
In Polar regions there is no chemical weathering.
Name the gases which help in 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.
Distinguish between
Oxidation and Carbonation
The process of dissolution of rock substances in water is ______.
