Question

A metal X reacts with water to produce a highly combustible gas Y, and a solution Z. another metal P reacts with Z to give the same gas Y. X,Y,Z and P respectively are
A. `Zn,H_(2),Zn(OH)_(2),Al`
B. `Na,H_(2),NaOH,Zn`
C. `K,H_(2),KOH,Al`
D. `Li,H_(2),LiOH,K`

Answer 1

Correct Answer - B
`underset((X))(Na)+H_(2)O to underset((Z))(NaOH)+underset((Y))(H_(2))`
`underset((Z))(NaOH)+underset((P))(Zn) to Na_(2)ZnO_(2) +underset((Y))(H_(2))`