Question

Formation of cynohydrin from ketone is an example of
a) Nucleophilic addition b) Nucleophilic substitution
c) Electrophilic substitution d) Electrophilic addition

Answer 1

Answer:

b)nucleophilic substitution is the answer

Answer 2

Nucleophilic addition
HCN+OH->CN- +H2O
Now CN- attack’s on corbonyle carbon
Than later OH- regenerates from H2O by giving one H+ ion to corbonyle oxygen
So this reaction is nucleophilic addition reaction