Download GTU BE/B.Tech 2019 Winter 5th Sem New 2153611 Green Chemistry For Technologists Question Paper

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Subject Code: 2153611

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- V (New) EXAMINATION - WINTER 2019
Subject Name: Green Chemistry for Technologists
Time: 10:30 AM TO 01:00 PM Date: 25/11/2019 Total Marks: 70

Instructions:

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1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. (a) What is atom economy? MARKS 03
   (b) How catalysts are considered as green? 04
   

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   (c) Explain twelve basic principles of green chemistry with suitable examples. 07
2. (a) Write ways for minimization of pollution. 03
   (b) How green chemistry is different from general chemistry? 04
   (c) Explain utility of water as green solvent in comparison to organic solvents. 07

   OR

   (c) Explain some chemical hazards occurred and their probable prevention by utilizing green chemistry. 07

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3. (a) Explain in brief harmful effects of Lead pollution. 03
   (b) What changes can be done via green chemistry for persistent pollutants? 04
   (c) Provide Green Route of Synthesizing the following (a) Epichlorohydrin (b) Propylene Oxide (c) Phenol 07

   OR

   Q.3 (a) Give three chemicals that can be generated from renewable sources. 03
   (b) Write suitability for “Green chemistry for-green India” 04
   

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   (c) Write in detail the manufacturing involved in Hydrogen Peroxide and also compare both Conventional vs. Green route 07
4. (a) What is safer chemical design? 03
   (b) “Microwave heating as a greener technology” Explain. 04
   (c) What are solvent free reactions? Explain various ways available with the help of chemical reactions. 07

   OR

   (a) Write a note on “Process Intensification”. 03
   

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   (b) Name few industries which have opted OR in need of opting green chemistry principles? 04
   (c) What are Ionic liquids? Explain properties of ionic liquids and their applications. 07
5. (a) What are VOCs? 03
   (b) Explain principle for reduced derivatization. 04
   (c) What are supercritical fluids? What is supercritical CO2? What are its advantages? 07

   OR

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   (a) Write a note on solvent free organic synthesis. 03
   (b) Explain greener approach of reactions through sonication. 04
   (c) Write in detail Green Route of Synthesizing the following (a) Aniline (b) Ibuprofen. 07