The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is:

C H_{3} C O C l / A l C l_{3} . B r_{2} / A l B r_{3}, H N O_{3} / H_{2} S O_{4}, Z n / H C l

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C H_{3} C O C l / A l C l_{3}, Z n - H g / H C l, B r_{2} / A l B r_{3}, H N O_{3} / H_{2} S O_{4}

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B r_{2} / A l B r_{3}, C H_{3} C O C l / A l C l 3, H N O_{3} / H_{2} S O_{4}, Z n / H C l

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H N O_{3} / H_{2} S O_{4}, B r_{2} / A l C l_{3}, C H_{3} C O C l / A l C l_{3}, Z n - H g / H C l

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Solution

The correct option is B $C H_{3} C O C l / A l C l_{3}, Z n - H g / H C l, B r_{2} / A l B r_{3}, H N O_{3} / H_{2} S O_{4}$

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