JEE Main 2021 (24 Feb, Shift 2) Chemistry Q47: Amines

Question

What is the correct sequence of reagents used for converting nitrobenzene into $m$-dibromobenzene ?
[Scheme: nitrobenzene $\rightarrow$ $\rightarrow$ $\rightarrow$ $\rightarrow$ $m$-dibromobenzene]

Accepted Answer

Option 4: $\xrightarrow{\mathrm{Br_2/Fe}}$ $/$ $\xrightarrow{\mathrm{Sn/HCl}}$ $/$ $\xrightarrow{\mathrm{NaNO_2/HCl}}$ $/$ $\xrightarrow{\mathrm{CuBr/HBr}}$

Answer

$\xrightarrow{\mathrm{Sn/HCl}}$ $/$ $\xrightarrow{\mathrm{KBr}}$ $/$ $\xrightarrow{\mathrm{Br_2}}$ $/$ $\xrightarrow{\mathrm{H^+}}$

Answer

$\xrightarrow{\mathrm{NaNO_2}}$ $/$ $\xrightarrow{\mathrm{HCl}}$ $/$ $\xrightarrow{\mathrm{KBr}}$ $/$ $\xrightarrow{\mathrm{H^+}}$

Answer

$\xrightarrow{\mathrm{Sn/HCl}}$ $/$ $\xrightarrow{\mathrm{Br_2}}$ $/$ $\xrightarrow{\mathrm{NaNO_2}}$ $/$ $\xrightarrow{\mathrm{NaBr}}$

Answer

$\xrightarrow{\mathrm{Br_2/Fe}}$ $/$ $\xrightarrow{\mathrm{Sn/HCl}}$ $/$ $\xrightarrow{\mathrm{NaNO_2/HCl}}$ $/$ $\xrightarrow{\mathrm{CuBr/HBr}}$

JEE Main 24 February 2021, Shift 2, Chemistry Q47

Same idea in other shifts