Question

Keto-enol tautomerism is observed in :
A. `H_(5)C_(6)-overset(O)overset(||)(C)-H`
B. `H_(5)C_(6)-overset(O)overset(||)(O)-C_(6)H_(5)`
C. `H_(5)C_(6)-overset(O)overset(||)(C)-CH_(3)`
D. `H_(5)C_(6)-overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3)`

Answer 1

Correct Answer - C::D
`underset("(Keto form)")(C_(6)H_(5)-overset(O)overset(||)(C)-CH_(3))` and `underset("(enol form)")(C_(6)H_(5)-overset(OH)overset(|)(C)=CH_(2))`
`underset("(keto form)")(C_(6)H_(5)=overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3))` and
`{:(C_(6)H_(5)-C-CH=C-CH_(3)),(" ||"" |"),(" "O" "OH),(" (enol form)"):}`