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Q.

An example of carbonate ore is

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a

Magnesite

b

Pyrolusite

c

Epsom salt

d

Rock salt

answer is A.

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Detailed Solution

The formula of Magnesite is ${MgCO}_{3}$

Formula of Pyrolusite is ${MnO}_{2}$

The Formula of Epsom salt is ${MgSO}_{4} . 7 H_{2} O$

The formula of Rock salt is NaCl .

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