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Matrix:

Column I

Column II
(a)
Coal, petroleum
(i)
Ferrous
(b)
Iron ore, cobalt
(ii)
Precious metals
(c)
Bauxite, lead
(iii)
Non-ferrous metals
(d)
Gold, platinum
(iv)
Energy minerals

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a-ii; b-iv; c-i; d-iii

a-iii; b-iv; c-ii; d-i

a-iv; b-i; c-iii; d-ii

a-ii; b-iv; c-iii; d-i

answer is C.

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Detailed Solution

1)      Coal and petroleum are a very significant conventional source. Coal is the most abundantly available fossil fuel in India, and petroleum or mineral oil is also a major energy source in our country.
2)      Iron ore and cobalt are important ferrous metals which provide a strong base for the development of metallurgical industries.
3)      Bauxite and lead are non-ferrous metals and play a vital role in a number of metallurgical, engineering and electrical industries.
4)      Gold and platinum come under the category of precious metals.

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