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Part II Q. 2
(a) Explain the structure of Grignard's reagent. [6] (b) How aldehydes, ketones, carboxylic acids, Hydrocarbons and alcohols can be synthesized from Grignard's reagent. [10] (c) Complete the following reaction. CH3CH2Br + Mg/Ether --> ? ? + Chloranil --> ? [4] (20)
Q. 3
(a) How you will synthesize the following starting from benzene. (i) Acetophenone (ii) 1,3,5-tribromobenzene (iii) n-propyl benzene [10] (b) In electrophilic aromatic substitution "halogens" are deactivating but O, p-directing. Explain. [5] (c) Sulphonation is reversible reaction at high temperature. Discuss its merits.. [5] (10)
Q. 4
(a) Describe various methods to determine the order of reaction. [9] (b) What is the third order reaction. Give examples. [4] (c) Derive the Kinetic equation for 3rd order reaction. [7] (20)
Q. 5
(a) Can we prepare the Aliphatic diazonium salt. If yes, give examples. [3] (b) How can the following prepared from benzene diazonium salt. (i) Benzene (ii) m-nitrophenol (iii) Biphenyl [8] (c) Write a note on Sandmeyer reaction. [5] (12)
Q. 6
(a) Describe the exact source of raw material used in Petrochemicals. [3] (b) Give Industrial synthesis of vinylacetate. [10] (c) Describe the production of Vitamin-C from Glucose. [7] (20)
Q. 7
(a) Describe the synthesis of streptomycin. [6] (b) Discuss the role of Fermentation in Organic Synthesis. [4] (c) Give synthesis of polypropylene and its uses. [10] (20)
Q. 8
(a) What is Margarine? How it is manufactured industrially? [10] (b) Nicotine on Oxidation with KMnO4 gave. Nicotinic acid. Write structures of nicotine, nicotinic acid and two other isomer of nicotinic acid. [6] (c) Write a note on epimerization. [4] (20)