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(C) The nitration of dimethylbenzene (xylene) depends on the symmetry of the molecule and the directing effects of the two methyl groups.$1$. $1,2-$Di

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$1,4-$Dimethylbenzene

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(C) The nitration of dimethylbenzene (xylene) depends on the symmetry of the molecule and the directing effects of the two methyl groups.$1$. $1,2-$Dimethylbenzene ($o-$xylene): The two methyl groups are at positions $1$ and $2$. Nitration can occur at positions $3$ or $4$,leading to two different isomers.$2$. $1,3-$Dimethylbenzene ($m-$xylene): The methyl groups are at positions $1$ and $3$. Nitration can occur at positions $2, 4,$ or $5$,leading to multiple isomers.$3$. $1,4-$Dimethylbenzene ($p-$xylene): The methyl groups are at positions $1$ and $4$. Due to the high symmetry of the $p-$xylene molecule,all four available ring positions ($2, 3, 5,$ and $6$) are equivalent. Therefore,nitration at any of these positions results in the formation of only one product,$2-$nitro-$1,4-$dimethylbenzene.

Ring nitration of dimethylbenzene results in the formation of only one nitro dimethylbenzene. The dimethylbenzene is

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