IIT JEE Chemistry Final Revision Set 20

1. An organic compound E with molecular formula C₅H₈ on hydrogenation gives compound F with molecular formula (C₅H₁₂). Compound E on ozonolysis gives formaldehyde and 2-ketopropanal. Give the structural formula of compound E.

2. Give reason: Optically active 2-iodobutane on treatment with NaI in acetone gives a product which does not show optical activity.

3. Give reasons:
Acetic acid can be halogenated in the presence of P and Cl₂ but formic acid cannot be halogenated in the same way.

4. Match the following

X------------------------Y
Decarboxylation---------Addition reaction
Ozonolysis--------------Soda lime
Williamson's synthesis--Structure of alkene
Dichloroethane----------Phenol

5. What is cannizzaro reaction?




Sources:
JEE 1995
Jee 1983