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Match the articles in column I with column II.
Matrix:

Column I

Column II
a)
Mineral
i)
i) Mineral which is extracted on commercial scale
b)
Ore
ii)
ii) Unwanted impurities present in ore
c)
Gangue
iii)
iii) Naturally occurring compounds of metals
d)
Flux
iv)
iv) Substance which forms fusible slag on smelting

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

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

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

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

answer is C.

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Detailed Solution

Gangue is defined as the impurity of sand, rocks and other types of impurities present in an ore. Metallurgy is the process which is used for extraction of metals in their pure form. The metals are extracted from minerals which are known as ore. Mineral is naturally occurring compounds of metals and flux is the fusible slag which is formed on smelting.

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