An aldehyde, ( P) which does not undergo self aldol condensation gives benzaldehyde and two moles of ( Q) on ozonolysis. Compound ( Q), on oxidation with silver ions gives oxalic acid. The structure of ( P) is given as
A tertiary alcohol H upon acid catalyzed dehydration gives a product I. Ozonolysis of I leads to compounds J and K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, whereas K on reaction with KOH gives only
The structure of compound I is