दी गई अभिक्रिया में क्रमश: W,X, Y एवं Z को पहचानिए।
`CaCO_(3) overset(Delta)(to) W + X`
`W + H_(2) O to Y`
`Y + Z to NaOH + CaCO_(3)`

Options

A. `CaO , CO_(2) , CaCO_(3) , Na_(2)CO_(3)`
B. `CO_(2) , Ca(OH)_(2) ,Ca(HCO)_(3) , NaHCO_(3)`
C. `CaO , CO_(2) , Ca(OH)_(2) , Na_(2) CO_(3)`
D. `CO_(2) , CaO , H_(2) CO_(3) , Na_(2) CO_(3)`

Answer

C

Explanation

`CaCO_(3) overset(Delta)(to) underset((W))(CaO) + underset((X))(CO_(2))`
`underset((W))(CaO) + H_(2) O to Caunderset((Y))((OH)_(2)) `
`underset((Y))(Ca) (OH)_(2) + underset((Z))(Na_(2)) CO_(3) to CaCO_(3) + 2 NaOH`