The correct statement is

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(C) The hydrogenation of benzene is represented as: $C_6H_6 + 3H_2 \xrightarrow{Ni, 150^{\circ}C} C_6H_{12}$.Because the intermediate products (cycloh

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Cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene.

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(C) The hydrogenation of benzene is represented as: $C_6H_6 + 3H_2 \xrightarrow{Ni, 150^{\circ}C} C_6H_{12}$.Because the intermediate products (cyclohexadiene and cyclohexene) are more reactive than benzene itself,they are immediately hydrogenated to cyclohexane.Therefore,it is not possible to isolate cyclohexadiene and cyclohexene with ease during the controlled hydrogenation of benzene.Thus,the correct statement is that cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene.

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