Advertisements
Advertisements
प्रश्न
Give Reasons:
Chemical weathering is predominant in hot and humid zones.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Identify the type of weathering from the given description.
The rock rusts.
Distinguish between the following pair
Hydration and solution
What do you understand by controlled grazing?
Discuss the role of water in the process of chemical weathering.
How do animals and plants assist in weathering?
Give two differences between physical 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.
Mixing of water with the atmospheric carbon-di-oxide is known as ______.
Hydration comes under ______.
Statement: The Agents of chemical weathering are Oxygen, Carbon dioxide, and Hydrogen.
Reason: Chemical weathering is predominantly high in the hot and humid regions.
