St. Joseph’s College of Arts & Science (Autonomous) St. Joseph’s College Road, Cuddalore – 607001 PMB704 - ENVIRONMENTAL MICROBIOLOGY
Time : 3 hrs
Max Marks :75
U
SECTION – A (5X5=25) Answer any FIVE Questions 1. Factors affecting air microflora. 2. Eutrophication 3. Oxidation ponds 4. BOD 5. Sulfur cycle 6. Antagonism 7. Bioleaching 8. Biofilms SECTION – B (5X10=50) Answer any FIVE Questions 9. Give an account on enumeration of microorganisms in air. 10. What are water borne diseases? Explain in detail. 11. What is chlorination? Give an account on the methods of chlorination.
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Q7/20S/11-12
12. Give an account on the indicators of faecal pollution. 13. Give an account on Nitrogen Cycle. 14. Explain parasitism and commensalism with suitable examples. 15. Give an account on the microbial interaction with animals. 16. Define composting and describe the process of composting with its advantages.
a) Mutualism b) Commensalism. d) Antagonism d) Predation. 10. The type of symbiosis in which one organism live in or on another. organism at the expense of ...
Environmental Chemistry - Stanley E. Manahan, 5th Ed., Lewis Publishers, 1995. 2. Chemistry for Environmental Engineering and Sciences (5th Ed)- - CN ...
What is biogeochemical cycling? Discuss the sulfur cycle. 6. Explain about antagonistic interaction between microorganisms. 7. Write a notes on biofilm. 8.
