Q.

Which of the following statement(s) is/are correct?

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a

Cuprlte and zincite are oxide ores

b

Magnesite and carnallite are carbonate ores

c

Chalcocite and azurite are ores of copper

d

Feldspar and albite minerals contain aluminium

answer is A.

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Detailed Solution

Cuprite is a significant copper ore with the chemical formula Cu2O. The metal in this instance is an oxide, namely copper (I) oxide. As a result, this ore is an oxide ore. The mineral form of zinc oxide is called zincite and has the formula ZnO.

Chalcocite (Cu2S) and chalcopyrite (CuFeS2; yellow copper ore) are the main sulfidic ores, whereas cuprite is the main oxidic ore (Cu2O; red copper ore).

Hence cuprite and zincite are oxide ore and magnesite and carnallite are carbonate ores.

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Which of the following statement(s) is/are correct?