A groups metal (A) which is present in common salt reacts with (B) to give compound in which hydrogen is present in -1 oxidation state. (B) on reaction with a gas (C) to i universal solvent (D). The compound (D) on reacts with (A) to give (E), a strong base Identify A, B, C, D and E. Explain the reactions.

Explanation

(i) Isotops of hydrogen reacts with which oxygen to give heavy water (B)
`underset((A))2D_2+O_2tounderset((B))2D_2O`
(ii) Deuterium (A) undergoes addition reaction with propene (C ) to give propane deuteride (D)
`CH_3underset((C ))CH=CH_2toCH_3-underset((D))CHD-CH_2D`