Why Mica is an indispensable minerals and where are its deposits found?

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Mica is indispensable minerals due to its excellent di-electric strength, low power loss factor, insulating properties and resistance to high voltage.

Mica deposits are found in the northern edge of the Chota Nagpur plateau. Koderma Gaya – Hazaribagh belt of Jharkhand is the leading producer.

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India’s bauxite deposits are mainly found in the Amarkantak plateau, Maikal hills and the plateau region of Bilaspur-Katni.

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Hints: Mica: 1. Ajmer, 2. Beawar, 3. Gaya, 4. Hazaribagh, 5. Nellore.

Bauxite: 1. Katni, 2. Bilaspur, 3. Amarkantak, 4. Maikal hill.

Manganese: 1. Sundergarh, 2. Balaghat, 3. Nagpur, 4. Bhandara, 5. Kendujhar, 6. Shimoga, 7. Goa.

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There is a pressing need to use renewable energy in India for the following reasons:

(i)The growing consumption of energy has resulted in the country becoming increasingly dependent on fossil fuels such as coal, oil and gas.

(ii)Rising prices of oil and gas and their potential shortages have raised uncertainties about the security of energy supply in future, which in turn has serious repercussions on the growth of the national economy.

(iii)Moreover, increasing use of fossil fuels also causes serious environmental problems.

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Hints:

(a) Iron-ore belts: Iron ore belts have been marked on western coastside which extend from Ratnagiri to Marmagao.

Another belt is extended between Orissa and Bellary to Chikmaglore districts of Karnataka. One belt is extended centrol India near Durg to Bailadila and fourth belt of iron are is extended between Gua, Kendujhar in Orissa.

(b) Iron ore mines sites: Iron mines cites are Ratnagiri, Goa, Chitradurga, Tumkur, Chikmaglore, Kendujhar.

(c) Exporting Ports: Marmagao, Mangalore, Vishakhapatnam, Paradip.