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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.

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