GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-III (NEW) EXAMINATION — SUMMER 2019
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Subject Code: 2130501 Date: 15/06/2019Subject Name: Organic Chemistry and Unit Processes
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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MARKS
Q.1 (a) Define the term: Stereoisomerism, Chiral Carbon, Optical activity. 03
(b) What is cracking? State its importance? Define Octane number & cetane number. 04
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(c) Explain with suitable example of SN1 Reaction. 07
Q.2 (a) Write the derivatives of carboxylic acid. 03
(b) Explain Electrophillic addition reaction. 04
(c) Write a note on optical isomerism of lactic acid and tartaric acid. 07
OR
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(c) Discuss the manufacturing of Nitrobenzene from benzene by continuous nitration with fortified spent-acid process. 07
Q.3 (a) State nitrating agents and sulphonating agents. 03
(b) With reactions discuss the sulphonation of benzene. 04
(c) Explain the manufacturing process of Acetic acid. 07
OR
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Q.3 (a) Give diazotization reaction along with its mechanism. 03
(b) Explain preparation of “Synthetic Petrol” by Bergius method. 04
(c) Write in detail Howarth's synthesis, properties and use of Naphthalene 07
Q.4 (a) Define the term : Free radical, electrophile and nucleophile. 03
(b) Discuss preparation, properties and uses of Pyrrole. 04
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(c) Give mechanism and application of Cannizzaro reaction and Wolf-Kishner reaction. 07
OR
Q.4 (a) Give the synthesis and Uses of Sulphanilamide. 03
(b) What do you understand by isoeletric point of amino acids? Explain. 04
(c) Manufacturing of sucrose from sugar cane with flow diagram. 07
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Q.5 (a) Discuss preparation, properties and uses of furan. 03
(b) What are a-amino acids? Discuss any one method of preparation for Glycine. 04
(c) Explain the classification of dyes on the basis of their Chemical Constitution. Give the synthesis of Congo Red. 07
OR
Q.5 (a) Explain the Witt's theories to explain the colour concept. 03
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(b) Write a note on Killiani fischer synthesis. 04
(c) Give the synthesis and application of Paracetamol and Chloroquine. 07
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