Which of the following are non-metal displacement reactions? (A) ( Ca (s)+2 H ₂ O (l) Ca ( OH )₂(a q)+ H ₂(g) ) (B) ( V ₂ O ₅(s)+5 Ca (s) 2 ~V (s)+5 CaO (s) ) (C) (2 Fe (s)+3 H ₂ O (l) Fe ₂ O ₃(s)+3 H ₂(g) ) (D) ( Cr ₂ O ₃(s)+2 Al (s) Al ₂ O ₃(s)+2 Cr (s) )

Step-by-step solution

Reactions given in options (A) and (C) are hydrolysis reaction and not metal displacement reactions as in these cases there is only one metal present in the reaction. (( A ) Ca (s)+2 H ₂ O (l) Ca ( OH )₂(a q)+ H ₂(g) ) (C) (2 Fe (s)+3 H ₂ O (l) Fe ₂ O ₃(s)+3 H ₂(g) )