Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem Old 130501 Organic Chemistry And Unit Processes Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (OLD) EXAMINATION ? WINTER 2018
Subject Code:130501 Date:05/12/2018
Subject Name:Organic Chemistry And Unit Processes
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define the following terms: 07
(1) Octane number (2) Chromophore (3) Addition reaction (4) Asymmetric
carbon (5) Polynuclear aromatic hydrocarbons (6) Heterocyclic compound
(7) Polymers
(b) Fill in the blanks: 07
1. General formula of carboxylic acids is ______________.
2. The unit process in which ?SO3H group is introduced is called __________.
3. Structural formula of primary alkyl halide is ______________.
4. The compounds which are converted to polyhydroxy aldehydes or polyhydroxy
ketones on hydrolysis are called _______________.
5. In Wolff-Kishner reduction of aldehydes ________is used as reducing agent.
6. Soap is the sodium or potassium salts of higher _______________.
7. In Friedel-Crafts reaction of benzene _____________ is used a catalyst.
Q.2 (a) Explain electrophilic addition reactions with their mechanism. 07
(b) Explain fractional distillation of crude oil. What are the various fractions
obtained by the fractional distillation of petroleum? Give one use of each.
07
OR
(b) Write a note on modern theory of colour. 07
Q.3 (a) Give a brief account of the optical isomerism of Tartaric acid. 07
(b) Describe important chemical properties of alkyl halides. 07
OR
Q.3 (a) Give an account of manufacture processes of Acetic Acid. 07
(b) Describe chemical properties and uses of Ethanol. 07
Q.4 (a) Explain manufacturing process of sugar from cane in detail. 07
(b) What are synthetic detergents? How do they differ from soaps? 07
OR
Q.4 (a) Explain Cannizzaro Reaction with mechanism. 07
(b) Give an account of electrophilic substitution reactions of Naphthalene. 07
Q.5 (a) Give an account of different five membered and six membered heterocyclic
compounds.
07
(b) Describe various electrophilic substitution reactions of Benzene. 07
OR
Q.5 (a) Write a note on polymer properties and structure. 07
(b) Give an account of different types of unit processes of organic chemistry. 07
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This post was last modified on 20 February 2020