Question

. A metal A, which is used in thermite process,
when heated with oxygen gives an oxide B,which is amphoteric in nature. Identify A and B.Write down the reactions of oxide B with HCland NaOH.

Answer 1

tHE metal A is ALUMINUM and B is AL2O3 the rxn of Al2O3 with naoh gives NaAlO2 and h2 and rxn with hcl gives Alcl3 and h2