problem1) Answer all the problems:

a) prepare down the full name and structure of BHC.

b) prepare down the chemical reactions to show 1, 2 and 1, 4 additions in butadiene.

c) What are activating and deactivating groups? Describe with suitable ex of each.

d) Carbon tetrachloride is non-polar & chloroform is polar. Describe, why?

e) Phenyl group is known to exert negative inductive effect, but each phenyl ring in biphenyl (C₆H₅–C₆H₅) is more reactive than benzene towards electrophilic substitution. Describe, why?

problem2) prepare the complete mechanism for diazotization reaction of a primary amine.

problem3) Discuss the SN1 and SN2 reactions in detail.

problem4) describe the following in detail:

i) Walden Inversion

ii) Methods of resolution of racemic mixture.