Most industries are concentrated around coal mines. Give reasons
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Thermodynamically the most stable form of carbon is (a) diamond (b) graphite (c) fullerenes (d) coal
(b) Graphite is thermodynamically the most stable form of carbon.
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Why gas masks are used by miners in coal mines while working ?
[Hint : To absorb poisonous gases.]
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Give the names and formulae of three ores which are concentrated by froth fioatation process.
Galena (PbS), Zinc blende (ZnS), Cinnabar (HgS).
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Give two examples each of the following Raw Materials, End products, tertiary Activities, Agro-based Industries, Cottage Industries, Co-operatives
Raw Materials Answer: Cotton and iron ore End products Answer: Cloth and steel ertiary Activities Answer: Banking and transport Agro-based Industries Answer: Sugar and cotton textiles Cottage Industries Answer: Pottery and apiculture Co-operatives Answer: AMUL and Mother Dairy
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Why is the Prime Minister in India not directly elected by the people? Choose the most appropriate answer and give reasons for your choice
(a) In a Parliamentary democracy only the leader of the majority party in the Lok Sabha can become the Prime Minister.
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Consider the following statements: 1. Balaghat is known for its diamond mines.
(d) Balaghat of Madhya Pradesh is known for its manganese mines. Majhgawan is famous for diamond.
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How is iron-ore transported from Kudremukh mines to a port near Mangaluru?
Iron-ore is transported as slurry through pipelines.
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Why is mica considered the most important mineral in electric and electronic industries? Give three reasons.
Mica is: (i) Excellent di-electric in strength and has low powerless factor. (ii) It has insulating properties and resistance to high voltage. (iii) Most indispensable mineral used in electric and electronic industries.
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Consider the following statements: Small-scale industries are, in most cases, not as efficient and competitive as the large-scale ones.
(b) SSI contribution to Indian exports is 35% and in the total manufacturing turnover contribute approximately 40%. Small scale, industries have a low capital output ratio and give employment to...
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Despite having large reserves of coal, why does India import millions of tonnes of coal?
(b) 2nd and 3rd are correct statements.
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