question_answer

Propyne when passed through a hot iron tube at\[400{}^\circ C\]produces:

A)  benzene

B)  methyl benzene

C)  dimethyl benzene

D)  trimethyl benzene

E)  polypropene

Correct Answer: D

Solution :

\[\underset{propyne}{\mathop{3C{{H}_{3}}-C\equiv CH}}\,\xrightarrow[tube,\,400{}^\circ C]{red\,hot}\]