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The correct statement(s) about the following reaction sequence is (are)
\( \mathrm{P} \)
Cumene \( \left(\mathrm{C}_{9} \mathrm{H}_{12}\right) \underset{\text { (ii) } \mathrm{H}_{3} \mathrm{O}^{+}}{\stackrel{\text { (i) } \mathrm{O}_{2}}{\longrightarrow}} P \stackrel{\mathrm{CHCl}_{3} / \mathrm{NaOH}}{\longrightarrow} \)
W
\( Q \) (major) \( +R \) (minor), \( Q \underset{\mathrm{PhCH}_{2} \mathrm{Br}}{\stackrel{\mathrm{NaOH}}{\longrightarrow}} S \)
(2016 Adv.)
(a) \( R \) is steam volatile
(b) \( Q \) gives dark violet colouration with \( 1 \% \) aqueous \( \mathrm{FeCl}_{3} \) solution
(c) \( S \) gives yellow precipitate with 2, 4-dinitrophenylhydrazine
(d) \( S \) gives dark violet colouration with \( 1 \% \) aqueous \( \mathrm{FeCl}_{3} \) solution
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