When steam is passed over red hot iron,the substances formed are

What do you expect the nature of hydrides is,if formed by elements of atomic numbers $15$,$19$,$23$,and $44$ with dihydrogen? Compare their behaviour towards water.

Hydrogen directly combines with

Metal hydride on treatment with water gives

Which statement is not correct for ortho and para hydrogen?

Hydrogen can be obtained from water,by the action of water on