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Question

Which of the following ores does not belong to copper?

A
Malachite
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B
Bornite
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C
Kaolinite
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D
Azurite
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Solution

The correct option is C Kaolinite
The formula of the given ores are
a) Malachite=Cu2CO3(OH)2
b) Bornite=Cu5FeS4
c) Kaolinite=Al2O3.2SiO2.2H2O
d) Azurite=Cu3(CO3)2(OH)2
Kaolinite is not a copper ore.

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