What happens when ethyl chloride is treated with aqueous KOH?

What happens when ethyl iodide is treated with aqueous KOH ?

What happens, when (a) ethyl chloride is treated with aqueous KOH? (b) chlorobenzene is subjected to hydrolysis?

What happenes when ethyl chloride is treated with (i) aqueous ethanolic potassium cyanide and (ii) hot aqueous ethanolic silver nitrite ?

What happens when : Ethyl chloride is treated with (aq) KOH.

What happens when ethyl iodide is treated with (a) Aqueous KOH and (b) Alcoholic KOH ?