KCET · Chemistry · Hydrocarbons
The correct statement is
- A One mole each of benzene and hydrogen when reacted gives \( 1 / 3 \) mole of cyclohexane
and \( 2 / 3 \) mole unreacted hydrogen. - B It is easier to hydrogenate benzene when compared to cyclohexene.
- C Cyclohexadiene and cyclohexene cannot be isolated with ease during controlled
hydrogenation of benzene. - D Hydrogenation of benzene to cyclohexane is an endothermic process.
Answer & Solution
Correct Answer
(C) Cyclohexadiene and cyclohexene cannot be isolated with ease during controlled
hydrogenation of benzene.
Step-by-step Solution
Detailed explanation
During the hydrogenation of benzene only cyclohexane can be isolated.

Benzene
Cyclohexane
Therefore, cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene.

Benzene
Cyclohexane
Therefore, cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene.
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