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(B) The reaction is an electrophilic aromatic substitution (nitration) of isopropylbenzene (cumene).The isopropyl group $(-CH(CH_3)_2)$ is an ortho/pa

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$1-$isopropyl$-4-$nitrobenzene

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(B) The reaction is an electrophilic aromatic substitution (nitration) of isopropylbenzene (cumene).The isopropyl group $(-CH(CH_3)_2)$ is an ortho/para-directing group due to the $+I$ effect and hyperconjugation.However,the para-position is sterically less hindered compared to the ortho-position.Therefore,the major product formed is the para-substituted product,which is $1$-isopropyl-$4$-nitrobenzene.

The major product formed in the reaction is:
$Isopropylbenzene + HNO_3 \xrightarrow{conc. H_2SO_4} ?$

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The major product formed in the reaction is:$Isopropylbenzene + HNO_3 \xrightarrow{conc. H_2SO_4} ?$