A(metal)+`X_(2) overset (Delta) rarr B overset (H_(2)O) rarr Z+D`
(A gives Brick red to flame)
(`X_(2)` is relatively inert in VA group)
`Z overset(Delta)rarrE+H_(2)O,E overset(“coke”) underset(Delta) rarr {:(F,+,G),(x_(2)darr,Delta,darrNaOH),(I,,Y):}`
Compound F on hydrolysis gives
A. HCOOH
B. `C_(2)H_(2)`
C. `NH_(3)`
D. `CH_(4)`

A(metal)+`X_(2) overset (Delta) rarr B overset (H_(2)O) rarr Z+D`
(A gives Brick red to flame)
(`X_(2)` is relatively inert in VA group)
`Z overset(Delta)rarrE+H_(2)O,E overset(“coke”) underset(Delta) rarr {:(F,+,G),(x_(2)darr,Delta,darrNaOH),(I,,Y):}`
Compound I is
A. `Ca_(3)N_(2)`
B. `CaCN_(2)`
C. `Ca_(3)C_(2)`
D. `Ca(CN)_(2)`