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The pair that does NOT require calcinati...

The pair that does NOT require calcination is :

A

`ZnO and MgO`

B

`Fe_2 O_3 and CaCO_3 . MgCO_3`

C

`ZnO and Fe_2 O_3 .x H_2 O`

D

`ZnCO_3 and CaO`

Text Solution

Verified by Experts

The correct Answer is:
A
ZnO and MgO are oxides and, therefore , there is no change on calcination.
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