Write the structures of A, B, C, D & E in the following reactions:
a). Write the structures of the main products when ethanal (CH3CHO) reacts with the following Reagents.
(ii). dil. NaOH
(iii).Zn – Hg / conc.HCl
b). Arrange the following in increasing order of their reactivity towards nucleophilic addition reaction: Ethanal, Propanal, Propanone, Butanone
c). Give a chemical test to distinguish between following pair of compounds Propanal and Propanone