M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Chemistry
ENVIRONMENTAL AND GREEN CHEMISTRY
(CBCS 2015 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
All question carry equal marks
1. What is acid rain?
2. What is potable water?
3. What is break point chlorination?
4. What is electro dialysis?
5. Write a note on "designing of safer chemicals".
6. How will you select appropriate anxillians substances?
7. What is supercritical CO2
8. List two example for biocatalyst.
9. What is meant by carbon foot print?
10. Write a note on cerbon sequestration.
Sub. Code
536502
RW-956
2
Ws7
Part B x 5 25)
Answer all questions. choosing either or
All questions carry equal marks
11. What is green house effect? What are its
consequences? What steps do you suggest to control
it?
Or
How will you determine BOD, micronutrients and
heavy metals in water?
12. Write a note on
Aeralied lagoons
Oxidation pand
Or
Describe ultra filtration method what are the
advantages and disadvantages of this method?
13. State the twelve principles of green chemistry.
Or
Discuss the development of analytical techniques to
prevent the generation of hazardows substances.
14. Discuss the synthesis of caprolactum by using
principles of green chemistry.
Or
Explain the coupling reactions using ultra sound.
15. Discuss microwave assisted reactions in organic
solvents.
Or
Explain the microwave assisted reaction of
oxidation of toluene to benzoic acid.
RW-956
3
Ws7
Part C x 10 30)
Answer any three questions.
All questions carry equal marks
16. What are the sources of water pollution? Explain how will
you determine SS, VOC, TDS in weter?
17. Write a note on
Disinfection method
Sedimentation
Coagulation of water treatment.
18. Compare atom economy reactions and uneconomy
reaction with suitable examples.
19. Explain ultrasound assisted reactions involving.
Estrification and
Reaction.
20. Discuss reaction an solid support and solvent free esters
saponifications.
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