211- If three hydrogen molecules are removed from a cycloalkane molecule, which hydrocarbon is produced? (1) Hexene (2) Benzene (3) Cyclohexene (4) Cyclohexadiene
\textbf{211-} If three hydrogen molecules are removed from a cycloalkane molecule, which hydrocarbon is produced?
(1) Hexene \hfill (2) Benzene \hfill (3) Cyclohexene \hfill (4) Cyclohexadiene