225 – By oxidation of which compound can terephthalic acid be prepared?
[Figure: benzene ring with one $CH_3$ substituent and one $CH_3$ substituent at para positions] (1)
[Figure: benzene ring with three $CH_3$ substituents at 1,3,5 positions, and $H_3C$ group] (2)
[2em] [Figure: benzene ring with two $CH_3$ substituents at adjacent positions and one $CH_3$ at another position] (3)
[Figure: benzene ring with two $CH_3$ substituents at ortho positions] (4)
\textbf{225 –} By oxidation of which compound can terephthalic acid be prepared?
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\textit{[Figure: benzene ring with one $CH_3$ substituent and one $CH_3$ substituent at para positions]} (1) &
\textit{[Figure: benzene ring with three $CH_3$ substituents at 1,3,5 positions, and $H_3C$ group]} (2) \\[2em]
\textit{[Figure: benzene ring with two $CH_3$ substituents at adjacent positions and one $CH_3$ at another position]} (3) &
\textit{[Figure: benzene ring with two $CH_3$ substituents at ortho positions]} (4)
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