A metal (M) produces a gas (N) on reaction with alkalies like NaOH and KOH. Same gas is produced when the metal reacts with dilute sulphuric acid. Gas (N) reacts with another toxic gas (P) to form methanol at high temperature and pressure . (N) also reacts with metals like (Q) to form electrovalent hydrides. M, N, P and Q respectively are

Options

A. `Zn, H_(2), CO, Na`
B. `Na, H_(2), CI_(2), Ca`
C. `AI, H_(2), H_(2)S, B`
D. `Mg, H_(2), NO_(2), AI`

Answer

A

Explanation

`underset((M))(Zn)+2NaOH to Na_(2)ZnO_(2)+underset((N))(H_(2))`
`Zn+H_(2)SO_(4)to ZnSO_(4)+H_(2)`
`underset((P))(CO)+2H_(2)overset(700K, 200 atm)underset("Co catalyst")rarr CH_(3)OH`,
`underset((Q))(2Na)+H_(2)to 2NaH`