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Q.

Consider the following facts regarding different ores and choose the correct option.

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a

For the purpose of extraction, bauxite is chosen for A1

b

zinc blende or sphalerite is the same ore of zinc

c

The chemical composition of copper pyrites is CuFeS2

d

All of the above

answer is D.

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Detailed Solution

For the purpose of extraction, bauxite is chosen for aluminium. For copper and zinc, following ores can be used depending upon avilability and other relevant factors.
For copper Copper pyrites (CuFeS2), malachite (CuCO3.Cu(OH)2), cuprite (Cu2O), copper glance (Cu2S).
For zinc Zinc blende or sphalerite (ZnS), calamine (ZnCO3), zincite (ZnO).

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