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A solid compound 'X' on heating gives CO...

A solid compound `'X'` on heating gives `CO_(2)` gas and a residue. The residue mixed with water form `'Y'` . On passing an excess of `CO_(2)` through `'Y'` in the water, a clear solution `'Z'` is obtained. On boiling `'Z'` compound `'X'` is reformed. The compound `'X'` is `:`

A

`CaCO_(3)`

B

`Na_(2)CO_(3)`

C

`Na(HCO_(3))_(2)`

D

`K_(2)CO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
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