The correct statement(s) about the follo...

The correct statement(s) about the following reaction sequence is(are) `Cumen e (C_9H_12) overset ((i)O_2) underset ((ii) H_3O^+) rarr P overset (CHCl_3) underset (NaOH) rarr Q (Major)+ R (Mi nor) Q overset (NaOH) underset (PhCH_2Br) rarr S`

A

R is steam volatile

B

Q gives dark violet colouration with 1 % aqueous `FeCl_3` solution

C

S gives yellow precipitate with 2, 4- dinitro- phenylhydrazine

D

S gives dark violet colouration with 1% aqueous `FeCl_3` solution

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