(B) The structure $X$ represents resorcinol (a dihydroxybenzene derivative),which exists in equilibrium with its keto form $Y$ (cyclohex$-2-$ene$-1,4-

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(B) The structure $X$ represents resorcinol (a dihydroxybenzene derivative),which exists in equilibrium with its keto form $Y$ (cyclohex$-2-$ene$-1,4-$dione derivative).These structures differ in the position of a proton and a double bond,which is the characteristic feature of tautomerism.Therefore,$X$ and $Y$ are tautomers.Hence,Option $B$ is the correct answer.