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Q.

The ore in which sulphide is absent:

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a

argentite

b

pyrites

c

cuprite

d

siderite

answer is A, D.

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Detailed Solution

Sulphide is absent in cuprite and siderite ore.

Galena and Zinc Blende, Copper Glance, Iron Pyrite, Cinnabar, Argentite, and Silver Glance are a few examples of Sulphide ores. Additionally, all minerals are not metal ores, but all metal ores are minerals.

Hence, options A and D are correct.

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