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A compound X on heating gives a colourle...

A compound X on heating gives a colourless gas. This residue is dissolved in water to obtain Y. excess `CO_(2)` is bubbled through aqueous solution of Y, Z is formed. Z on gentle heating give back X. the X is

A

`NaHCO_(3)`

B

`Na_(2)CO_(3)`

C

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

D

`CaCO_(3)`

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VMC MODULES ENGLISH-13-14 HYDROGEN & S-BLOCK ELEMENT-Level 2
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