Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
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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:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain in detail TAML™ activators. 03
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(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
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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
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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
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(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
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(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
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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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