Time allowed: 3 hours
Max marks:100

Note:Attempt any Five Questions.


Q.1 A) Define the terms Sigma and pi bonds. What types of atomic orbitals give Sigma and pi bonds? Illustrate with the help of diagrams.

B) Predict and draw the shapes of NH3,H2O,C2H4, and C2H2 using hybridization.


Q.2 A) What is 1st order reaction? Explain with help of equation and describe its characteristics giving one example.

B) Explain the terms: i) Order or Reaction, ii) Molecularity of Reaction, iii) Rate Law.


Q.3 A) Describe with examples the main types of Catalysis.

B) What is hydrogen bond? Discuss its effects on the properties organic compounds.


Q.4 A) What is Grignard Reagent? Discuss with examples reactions of this Reagents.

B) Name typical reactions of carbonyl compounds. Describe following Nucleophilic addition reactions : i) Base Catalyzed, ii) Acid Catalyzed, iii) Ammonia and its derivatives.


Q.5 A) Describe the following Electrophilic Substitution Reactions: i) Friedel-Crafts Reaction, ii) Formylation, iii) Carboxylation.

B) What is Aromaticity? Describe the criteria and evidence for Aromaticity.

Q.6 What is Diazotization? How many Diazonium salts are prepared? Describe with examples the Replacement reactions of Diazonium salts

Q.7 A) What is the role of vitamins in the body? Write a note on Vit-B.

B) Describe with examples the classes of polymers. Write comprehensive notes on Polyesters, Polyamidas, and Polyurethanes.