CHO(CHOH)3CH2OH undergoes (i) NaCN/HCN (ii) H3O+, Δ (iii) Na-Hg(aq) (iv) H3O+ to form M. M reacts with PCl5 to form N. M reacts with Na-Hg(aq) to form Q. M reac | AITS & Test Series — Chem-Mantra | Chem-Mantra