Question

An aqueous solution of salt containing an acidic radical X ^– reacts with sodium hypochlorite in neutral medium. The gas evolved produces blue black colour spot on the starch paper. The anion X ^– is : 

(A) CH₃COO ^– 

(B) Br ^– 

(C) I ^– 

(D) NO₂^– 

Answer 1

The anion X ^– is I ^-.