Question

$C_{13}{H}_{10}O\stackrel{C{F}_{3}C{O}_{3}H}{\to }\left(A\right)\stackrel{H_3{O}^{+}}{\to }B+C$

With neutral $FeC{l}_3,C$ gives violet colour. B on decarboxylation and C on reduction with zinc dust, gives same compound. The correct statement is:

• A. C gives dye test positive in weakly alkaline medium
• B. C gives dye test positive in weakly acidic medium
• C. C gives dye test positive in strongly alkaline medium
• D. B can be formed by oxidation of toluene with chromyl chloride

Answer 1

The correct option is A C gives dye test positive in weakly alkaline medium

Starting compound is benzophenone.
B is benzoic acid and C is phenol.

Phenol gives azo dye test at a pH around 9-10.