Ethene $\to$ Benzene; The sequence of reagents required for this conversion is

HBr, KOH (aq), Fe / 873K

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Br₂ / CCl₄. KOH (alc), Fe / 873 K

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Br₂ / CCl₄. KOH (aq), NaNH₂

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HBr, NaNH₂, O₂ / 200⁰C, 1500 - 2000 atm

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Solution

The correct option is B
Br₂ / CCl₄. KOH (alc), Fe / 873 K

The conversion route is ethene to ethylene dibromide then to acetylene finally polymerization

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