Phenol on heating with alcoholic with KOH and chloroform undergoes `:`

Primary amines on reaction with alcoholic KOH and chloroform yields

Ethyl bromide on heating with alcoholic KOH solution gives

Which of the following organohalogen compound when heated with alcoholic KOH does not undergo dehydrohalogenation reaction :

Chloroform with alcoholic KOH gives

What happens when: (i). Methyl chloride is treated with alcoholic KCN. (ii). Ethyl chloride is treated with alcoholic KOH. (iii). Chloroform is heated with Ag powder.