Name a metal which liberates `H_2` when treated with NaOH.

Compounds A and B are isomers with formula C_2 H_4 Cl_2 . On treatment with aq. KOH, A gives a compound C which liberates ' H_2' gas on treatment with Na metal, B on treatment with aq.NaOH produces D which answers iodoform test. Give the structures of A,B,C and D and write the chemistry of reactions.

The metal that liberate hydrogen gas when react with steam is ___________

What happens when Al treated with dilute NaOH

Name the alkali metal which diagonal relationship with magnesium.

What happens when Aluminium is treated with dilute NaOH.