Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is C8H8O. Q undergoes Cannizzaro reaction but not haloform reaction, whereas S undergoes haloform reaction but not Cannizzaro reaction.
(i) Pi) O3/CH2Cl2−−−−−−−−−→ii) Zn/H2OQ(C8H8O)
(ii) Ri) O3/CH2Cl2−−−−−−−−−→ii) Zn/H2OS(C8H8O)
The option(s) with suitable combination of P and R, respectively, is(are):