Alcoholic solution of caustic potash is a specific reagent for

An alkyl bromide when reacts with alcoholic solution of caustic potash produces a single alkene.The alkene on ozonolysis gives mixture of acetone und formaladehyde. What is the alkyl bromide ?

Zinc dust in alcoholic solution is a specific reagent in the preparation of alkenes as a

Aqueous solution of potash alum is:

An aqueous solution of potash alum is

Aqueous solution of potash alum is :