Which compound is represented by this $\text{'}$H NMR

$($A$)$

$($B$)$

$($C$)$

$($D$)$

If benzene is subjected to Friedel$-$Crafts alkylation, then nitration, then halogenation, which of these product$($s$)$

What is the major organic product obtained from this

$($C$)$

Lallu

$($C$)$ I allu II vily

Which compound is the major product of this reaction sequence?

$($A$)$

$($B$)$

$($C$)$

$($D$)$

Which is the best leaving group in either displacement $(S_{N}2)$ or ionization reactions $(S_N\frac{1}{E}1)?$

$($A$)C{l}^{-}$

$($B$)-C-=N$

$($C$)$

$($D$)$

What is the major elimination product from this reaction?

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