Subject Code: 130501
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-III (OLD) EXAMINATION — WINTER 2018Date: 05/12/2018
Subject Name: Organic Chemistry And Unit Processes
Time: 10:30 AM TO 01:00 PM
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) Define the following terms: [07]
- Octane number
- Chromophore
- Addition reaction
- Asymmetric carbon
- Polynuclear aromatic hydrocarbons
- Heterocyclic compound
- Polymers
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(b) Fill in the blanks: [07]
- General formula of carboxylic acids is __________
- The unit process in which —SO3H group is introduced is called __________
- Structural formula of primary alkyl halide is __________
- The compounds which are converted to polyhydroxy aldehydes or polyhydroxy ketones on hydrolysis are called __________
- In Wolff-Kishner reduction of aldehydes __________ is used as reducing agent.
- Soap is the sodium or potassium salts of higher __________.
- In Friedel-Crafts reaction of benzene __________ is used a catalyst.
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Q.2 (a) Explain electrophilic addition reactions with their mechanism. [07]
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(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]
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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]
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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]
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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]
Total Marks: 70
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