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Which of the following are ores of zinc?

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in Aerospace Materials & Processes by (828k points)
Which of the following are ores of zinc?

(a) Cobaltite

(b) Erythrite

(c) Marmatite

(d) Litharge

This question was posed to me in exam.

The origin of the question is Aircraft Steels topic in portion Aircraft Steels of Aerospace Materials & Processes

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The correct choice is (c) Marmatite

To elaborate: Zinc and most elements are rarely found in their pure state, they are found in the form of ores. Zinc is also found in the form of like in like Marmatite, zinc sulphide (ZnS), Calamine, etc. in different places.

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