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Q.

Which of the following is not an ore of iron?

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a

Magnetite

b

Haematite

c

Siderite

d

Chalcopyrite

answer is D.

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Detailed Solution

A copper iron sulfide mineral called chalcopyrite has a brassy to golden yellow tint ( ${CuFeS}_{2}$ ). Chalcopyrite has a composition of 35% S, 30% Fe, and 35% Cu. The mineral is one of the main sources of sulfur and the main source of copper metal.

${CuFeS}_{2}$ although contains Fe.

Fe cannot be profitably extracted from it.

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