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(D) Styrene $(C_6H_5CH=CH_2)$ is prepared from benzene $(C_6H_6)$ in two steps:$1$. Benzene reacts with ethylene $(CH_2=CH_2)$ in the presence of $AlC

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$C_6H_6$

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(D) Styrene $(C_6H_5CH=CH_2)$ is prepared from benzene $(C_6H_6)$ in two steps:$1$. Benzene reacts with ethylene $(CH_2=CH_2)$ in the presence of $AlCl_3$ to form ethylbenzene $(C_6H_5CH_2CH_3)$.$2$. Ethylbenzene is then dehydrogenated at high temperature (approx. $700 \ ^\circ C$) using a catalyst (like iron oxide or $Al_2O_3$) to produce styrene and hydrogen gas $(H_2)$.Thus,benzene is the starting material used in the preparation of styrene.

Which one of the following is used in the preparation of styrene?

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