Download GTU BE/B.Tech 2018 Winter 5th Sem New 2153611 Green Chemistry For Technologists Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 5th Sem New 2153611 Green Chemistry For Technologists Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2153611 Date:27/11/2018

Subject Name:Green Chemistry for Technologists

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.

MARKS
Q.1 (a) Explain in detail TAML
TM
activators. 03
(b) Explain the role of ?Green Chemistry? for sustainable development. 04
(c) Define Ionic liquids. What are characteristic properties of ionic liquids? 07

Q.2 (a) Write a note on: microwave reactions. 03
(b) How sonochemistry is associated with green chemistry? 04
(c) Write a note on: microwave chemistry. 07
OR
(c) What are supercritical fluids? Take CO2 as example and explain in detail. 07

Q.3 (a) Elaborate minimization of pollution via greener routes of synthesis. 03
(b) What are renewable feed stocks? Explain with the help of a raw material
obtained from renewable feedstock?
04
(c) Explain twelve principles of Green Chemistry, with suitable examples. 07
OR
Q.3 (a) Discuss any two inherently atom efficient reactions. 03
(b) Explain principle of reduced derivatization. 04
(c) Explain benefits of ?Green Chemistry? to human health, environment and
economy & business.
07

Q.4 (a) Explain safer chemicals design, with examples. 03
(b) Establish the difference between green chemistry & general chemistry. 04
(c) Are supercritical fluids green in nature? Justify your answer with the help of
suitable example.
07
OR
Q.4 (a) What do you mean by green solvents? Explain with examples. 03
(b) Why there is need to have green chemistry in industries? 04
(c) Write short note: (i) Atom Economy (ii) E-factor (iii) Process Mass Intensity. 07

Q.5 (a) Give the greener route of synthesis of hydrazine. 03
(b) What is Process Intensification? What is its significance? 04

(c)
Provide Green Route of Synthesizing the following: (a) Aniline (b) Ibuprofen
(c) Isocyanates
07
OR
Q.5 (a) Give the greener route of synthesis of Phenol. 03
(b) Calculate atom economy of butyl bromide in the following reaction:
CH3CH2CH2CH2OH + NaBr + H2SO4 C4H9Br + NaHSO4 + H2O.
04
(c) Explain the harmful effects of Lead, Asbestos and Mercury pollution in brief. 07

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