Reaction of iso-propylbenzene with O2 followed by the treatment with H3O + forms phenol and a by product P. Reaction of P with 3 equivalents of Cl2 gives compound Q. Treatement of Q with Ca(OH)2 produces compound R and calcium salt S. The correct statement(s) regarding P, Q, R and S is(are) (IIT Adv 2024 Paper-1)