Question

Which of the following on oxidation with alkaline $KMn{O}_4$ followed by acidification with dil. $HCl$ gives terephthalic acid?

• A. p-Ethyl toluene
• B. n-Butane
• C. 1,3 - Di-isopropyl benzene
• D. m-Xylene

Answer 1

The correct option is A p-Ethyl toluene

Terephthalic acid is the organic compound with formula $C_6{H}_4(COOH{)}_2$. p-Ethyltoluene is the compound which gives terepthalic acid on oxidation with $KMn{O}_4$ followed by $HCl$. Both the alkyl $(-C{H}_3$ and $-C{H}_{2}C{H}_3)$ groups of compound are replaced by $-COOH$ group.