1.

Gas A is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling the precipitate is dissolved. On heating the resultant solution, the white precipitate appears with evolution of gas B. The gases A and B respectively are

Answer»

`CO_(2) and CO`
`CO and CO_(2)`
`CO and CO`
`CO_(2) and CO_(2)`

SOLUTION :ACCORDING to the equation.
`Ca(OH)_(2)+CO_(2) OVERSET(Delta)toCaCO_(3)+H_(2)O`
`CaCO_(3)+H_(2)O+CO_(2)toCa(HCO_(3))_(2)` ltbr. `Ca(HCO_(3))_(2) overset(Delta)toCaO+H_(2)O+2CO_(2)`
HENCE, the gas A and B are `CO_(2) and CO_(2)` respectively.


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