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In which of the following pair both mine...

In which of the following pair both minerals are oxide and metal is commercially extracted by carbon reduction method.

A

Siderite,Sylyine

B

Zincite,Haematite

C

Cuprite,Iron pyrites

D

Kaloinite,Calamine

Text Solution

Verified by Experts

The correct Answer is:
A
Fluorides convert `[3Ca_(3)(PO_(4))_(2)Ca(OH)_(2)]` present on teeth into more less soluble and stable `[3Ca_(3)(PO_(4))_(2).Ca(OH)_(2)]` which is forms teeth enamel.
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