Question

Hydrogen gas will not reduce heated Aluminium oxide - True or False?

• A. True
• B. False

Answer 1

The correct option is A

True

Oxides of highly electropositive metals like alkali metals, alkaline earth metals, Zinc and Aluminum are not reduced by Hydrogen.

CuO + H${}_2$$⟶$Cu (s) + H${}_2$O As shown in the above reaction, Hydrogen can reduce oxides of Cu, Sn, Fe, W, Pb, Mo, Co and Ni. Metals like Mo and W, which cannot be reduced by C can be reduced by Hydrogen.