CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323317
Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolyzed in presence of an acid results
1 Benzene-1,2-diol
2 2-Hydroxybenzaldehyde
3 Benzene-1,3-diol
4 Salicylic acid.
Explanation:
This is Reimer-Tiemann reaction.

So, correct option is (2).