JEE PYQ: Alcohols Phenols And Ethers Question 6
Question 6 - 2021 (24 Feb Shift 1)
Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. $\text{H}_2\text{SO}_4$ followed by treatment with NaOH?
(1) [Structure: 4-propyl-1,3-dimethylbenzene with two $\text{OH}$ groups ($\text{H}_3\text{C}$ and $\text{CH}_3$ on either side of $\text{HO}$ groups)]
(2) [Structure: Phenol with $\text{CH}_3$ and $\text{OH}$ groups]
(3) [Structure: 4-(3-butenyl)benzene-1,2-diol]
(4) [Structure: 4-(3-butenyl)phenol with single $\text{OH}$]
BETA
