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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nm154

Select the correct names.

A2-phenylethan-1-one for $C X_{6} H X_{5} COCH X_{3}$
B4-hydroxyaniline for $H X_{2} N - C X_{6} H X_{4} - OH$ (para)
C4-aminophenol for $H X_{2} N - C X_{6} H X_{4} - OH$ (para)
D1-phenylethan-1-one for $C X_{6} H X_{5} COCH X_{3}$

Answer: C, D

Seniority: alcohol (OH) outranks amine, so the para compound is 4-aminophenol, not 4-hydroxyaniline. For

C X_{6} H X_{5} COCH X_{3}

, the ketone carbon is C-1 of an ethane chain bearing a phenyl group, giving 1-phenylethan-1-one; 2-phenylethan-1-one would be

C X_{6} H X_{5} CH X_{2} CHO

.

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