Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2130501 Organic Chemistry And Unit Processes Question Paper

Enrollment No._______
A Firstranker's choice . .
GUJARAT TECHNOLOGICAL UNIVERSITY FirstRanker.com

--- Content provided by FirstRanker.com ---

BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
Subject Code: 2130501 Date: 7/12/2019
Subject Name: Organic Chemistry and Unit Processes
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

--- Content provided by FirstRanker.com ---

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain Markovinkov’s rule 03

--- Content provided by FirstRanker.com ---

(b) Write the reaction mechanism of formation of Schiff base 04
(c) Describe the rules for R/S nomenclature 07
Q.2 (a) Write the synthesis of Furan and thiophen 03
(b) Why the racemic mixture is formed in the case of S_N1 reaction. 04
(c) Give the two examples of nucleophile. Write note on nucleophilic addition reaction 07

--- Content provided by​ FirstRanker.com ---

OR
(c) Write note on synthesis of antiseptics drug 07
Q.3 (a) Explain octane and cetane number 03
(b) Define specific rotation. Write note on polarimeter 04
(c) Describe the method for cane sugar from sugarcane 07

--- Content provided by‍ FirstRanker.com ---

OR
Q.3 (a) Write method for synthesis of amide, anhydride, acid chloride and ester from carboxylic acid 03
(b) Write the uses of protein 04
(c) Describe the elucidation process of ketohexoses 07
Q.4 (a) Write the applications of dyes 03

--- Content provided by​ FirstRanker.com ---

(b) Explain sulphonation of benzene, nitrobenzene and toluene 04
(c) Define isoelectronic point. Write note on secondary and tertiary structure of protein. 07
OR
Q.4 (a) Why the aldohexoses reducing Fehling and tollens reagents 03
(b) Write the optical isomer of Malic acid and Tartaric acid 04

--- Content provided by FirstRanker.com ---

(c) Write preparation method of congo red, malachite green and crystal violet 07
Q.5 (a) Give the two name of reactions in which nitrene intermediate was involved. Write the mechanism of one them 03
(b) Write note on classification of dyes bases on application 04
(c) Write a note on Baeyer and Hoffman reactions 07
OR

--- Content provided by⁠ FirstRanker.com ---

Q.5 (a) Give the classification of protein according to composition. 03
(b) Define chromophore and auxochrome and explain their significance. 04
(c) Write the preparation method for formic acid and acetic acid 07