M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Oceanography
CHEMICAL OCEANOGRAPHY
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. NOAA.
2. Salinity.
3. Global warming.
4. Carbon.
5. Denitrification.
6. Importance of trace elements.
7. Alkalinity.
8. Methane.
9. JGOFS.
10. Organic matter.
Sub. Code
461103
RW-902
2
Ws5
Part B x 5 25)
Answer all questions choosing either or
11. Compare abiotic factors of sea water and fresh
water.
Or
Give an account on the structures of water
molecules.
12. Explain concept of chlorinity.
Or
Briefly explain the sources of dissolved gases in the
sea.
13. What are trace elements? Explain their importance.
Or
Explain the origin of dissolved oxygen in the sea
and its importance.
14. Discuss analytical methods available for
determination of nitrogen and phosphorus.
Or
Write an account on silicon and their distribution
and significance in the marine environment.
15. Describe methods of estimating particular organic
matter from marine environment.
Or
What are humic substances? Explain their
ecological importance.
RW-902
3
Ws5
Part C x 10 30)
Answer any three questions.
16. Describe various physical and chemical methods for the
determination of salinity.
17. Explain hydrological cycle and its significance.
18. Write a detailed note on
BOD
COD
Methane.
19. Describe inorganic plant nutrients origin and their role in
the fertility of the sea.
20. Organic matter plays major role in marine primary
productivity Discuss.
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