Diazonium salt reactions (Sandmeyer-type reaction with KI)

2024 Re-NEET 1 question

1. The major product X formed in the following reaction sequence is: [add image: p-ethylnitrobenzene] $\xrightarrow{(i)\ Cl_2/FeCl_3}\ \xrightarrow{(ii)\ Sn/HCl}\ \xrightarrow{(iii)\ NaNO_2/HCl,\ 274\text{-}278K}\ \xrightarrow{(iv)\ KI}\ X$