Q No.2.
a. What is the difference between Valence Bond Theory and Molecular Orbital Theory? (8)
b. Draw the Molecular orbital Diagram of CO molecule showing sigma, pi bonding, non-bonding and anti bonding molecular orbital. (8)
c. Discuss the difference between the Hybridization of SO2 and SO3. (4)

Q No.3.
a. Discuss the rate law of SN1 mechanism. (6)
b. What is the importance of half life in the determination of order of reaction? (6)
c. What is the pseudo first order reaction? What is its importance? (8)

Q. No. 4
a. Describe the difference between physical adsorption and chemiadsorplion. (8)
b. The data of Langmuir for the adsorption of Nitrogen and mica at 90 K given

....... ............. P (atm) ....... ........... ..2.8 ..... 3.4 .....4.0 .....4.9 ....6.0 .....7.3 ......9.4 .....12.8..... 17.9..... 23.5
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Amt adsorbed cumm at 20K & 760MM ... 12.3 ... 13.4 ... 15.1 ...17.9 ...19.0 ...21.6 ....23.9 .....25.5 .....28.2..... 30.8

Estimate the surface area of the mica sample in the Langnuir experiment? (8)
c. Define Homogeneous catalyst & Heterogeneous catalyst. (4)

Q. No. 5
a. Discuss stereo isomerism in compounds having 2 similar asymmetric carbon atoms. (6)
b. Draw Fischer projection formulae of the following compounds. (8)
i) R & S 2 - Bromopentane
ii) R & S 3 - chloro-1-pentane.
iii) R & S 3-chloro-3-methylocatne
iv) R & S 2-pentanol
c. What do you understand by the terms Z & E isomers? Illustrate your answer with example. (6)

Q. No. 6
a. Discuss the structure of Grignard Reagent. (4)
b. How these compounds can be prepared by Grignard Reagent? (12)
i) Ethane
ii) Acetic Acid
iii) 2-Butanol
c. What is the diazotization reaction? (4)

Q. No. 7
How would you prepare the following compounds from Benzene? Name each reaction as well. (20)
i) Acetophenone
ii) Bromobenzene
iii) Maleic anhydride
iv) Toluene
v) Benzaldehyde

Q. No. 8
a. Write main steps in the formation of following polymers: (3+3)
i) Nylon 6,6 and polyester by condensation polymerization
ii) Polyethlene by Free Radical polymerization
b. Differentiate between oil, fat & wax with examples. (9)
c. What are alkaloids? (5)