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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 when mixed with water forms 'Y'. On passing an excess of `CO_(2)` through 'Y' in water a clear solution 'Z' is obtained. On boiling 'Z' compound 'X' is reformed. The compound 'X' is.....

A

`Ca(HCO_(3))_(2)`

B

`CaCO_(3)`

C

`Na_(2)CO_(3)`

D

`K_(2)CO_(3)`

Text Solution

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The correct Answer is:
B
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