M.Sc. DEGREE EXAMINATION, APRIL 2017
Second Semester
Energy Science
ENVIRONMENTAL SCIENCE
(2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What are some of the causes of global warming?
2. What is meant by BOD in water analysis?
3. What is distilled water?
4. Distinguish between filtration and ultrafiltration.
5. What is Green Chemistry?
6. How does Green Chemistry differ from traditional efforts
to reduce pollution?
7. Explain the choice of starting materials in green
synthesis.
8. Give any two examples of chemical toxic prevention.
9. What is meant by carbon sequestration?
10. Write any one reaction which occurs on solid support.
Sub. Code
540201
RW-098
2
ws 4
Part B x 5 25)
Answer all questions choosing either or
11. What are the most visible signs of climate change?
Or
How are air pollutants classified? Discuss the
various control methods to prevent air pollution.
12. What is activated carbon and what does it do?
Or
Discuss the principle of electro-dialysis and its use
in water treatment.
13. Write a comparative statement on green chemistry
and synthetic chemistry.
Or
Explain the following concepts of Green Chemistry
Atom Economy
Less Hazardous Chemical Synthesis.
14. Describe polymer supported synthesis in green
chemistry.
Or
Provide Green route of synthesising any two
compounds.
15. Describe any two microwave assisted reactions in
green synthesis.
Or
Write a note on phase transfer catalysis in green
synthesis.
RW-098
3
ws 4
Part C x 10 30)
Answer any three questions.
16. Explain the various parameters to check the water
quality.
Write a note on green house effect.
17. Discuss any two secondary methods of water treatment.
18. "Green Chemistry is important in alternate reaction
pathways"-Explain.
Write the principles of sustainability of green
chemistry.
19. Write short notes on the following:
Catalytic oxidation in green synthesis
Use of biocatalyst in green synthesis.
20. Explain the following:
microwave assisted reactions in water
solvent free microwave assisted organic synthesis.
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