M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Physics
BASICS IN ENVIRONMENTAL SCIENCE
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. What are the green house gases?
2. Define pollution.
3. What is air pollution?
4. Explain radioactive pollution.
5. What are the pretreatment methods involved in water
pollution?
6. What do you mean by RO treatment of water?
7. What are the types of industrial hazards?
8. Define green chemistry.
9. What are the advantages of microwave?
10. What is biochemical removal of phosphorous?
Sub. Code
521702
RW-938
2
Wk 11
Part B x 5 25)
Answer the following questions, choosing either or
200 words each.
11. Explain ozone depletion.
Or
What do you mean by acid rain and photochemical
smog?
12. Write in detail about water pollution and its causes.
Or
Give a detail account on noise pollution.
13. Discuss the primary treatment methods involved in
water pollution.
Or
Explain the secondary water treatment methods.
14. How will you categorize industrial chemicals as
poisons, comosives or flammables?
Or
Explain the guidelines and safety methods for
handling industrial hazards.
15. Explain the photochemical degradation process.
Or
What are the significances of using enzymes for
pulp manufacture?
RW-938
3
Wk 11
Part C x 10 30)
Answer any three questions.
16. What is green house effect? Write the causes and
consequences of green house effect.
17. Discuss the effects of tannery, textile and fertilizers
contaminants.
18. Write a note on the advanced water treatment methods.
19. What are the 12 principles of green chemistry? Explain
the importance of each.
20. Explain in detail about exploring green resources for drug
development and essential oils.