A gas formed by the action of alcoholic KOH on ethyl iodie, decolourises alkaline `KMnO_(4)`. The gas is

Options

A. `C_(2)H_(6)`
B. `CH_(4)`
C. `C_(2)H_(4)`
D. `C_(2)H_(4)`

Answer

D

Explanation

Ethylene is formed by the action of alcoholic KOH on ethyl iodide
`C_(2)H_(5(I+KOH(alc.)toC_(2)H_(4)+KI+H_(2)O`
`C_(2)H_(4)` decolourises alkaline `KMnO_(4)` to form enthylene glycol.
`C_(2)H_(4)+(KMnO_(4)(alk.)) underset(H_(2)O+O) to underset("Ethylene glycol")({:(CH_(2)OH,),(|,),(CH_(2)OH,):}`