Anna University - Environmental Science and Engineering (EVS ) - 2011 November / December Question Paper

B.E/B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.

Common to B.E/B.Tech. (Civil Engineering / Computer Science and Engineering / lnformation Technology )

Third Semester

ENVIRONMENTAL SCIENCE and ENGINEERING

(Regulation 2010)

Time : Three hours
Maximum: 100 marks

Answer ALL questions.

PART A - (10 x 2 = 20 marks)

1. What are the effects of HIV / AIDS on environment?
2. What is Human Development Index (HDI)?
3. Distinguish between renewable and non-renewable resources
4. What are producers, consumers and decomposers?

5. What are hotspots biodiversity? Mention criteria for hot spots.

6. What do mean by environment refugees?

7. What are green house gases and greenhouse effect?

8. Define eietic and species diversity.

9. Whatis environmental ethics?

10.What is “E” waste?

PARTB - (5 x l6 = 80 marks)


11. (a) (i) Discuss the Universal model of energy flow in an ecosystems and explain how the flow of energy follows the I and II law of thermodynamics. (8)


(ii) What are ecological pyramids? Explain why in grass land ecosystems the pyramids of numbers are upright while in parasitic food chain it is inverted? (8)

Or


(b) (i) Explain different methods of In-Situ conservation of Biodiversity (8)


(ii) What are the major causes of man-wildlife conflicts? Discuss the remedial steps that can curb the conflict (8)

12. (a) (i) Discuss various sources of marine pollution. How can you prevent pollution of our oceans? (8)
(ii) How are solid waste classified ? Write the sources of urban and Industrial solid wastes. (8)


Or


(b) (i) Briefly describe the sources, effect and prevention of soil pollution (8)
(ii) Explain.the mitigation measures for land slides. (8)

13 (a) Discuss the modern Agriculture and its impacts and problems under the following heads
(i) High yielding varieties (4)
(ii) Fertilizer related problems (4)
(iii) Effect of Pesticides (4)
(iv) Water logging and salinity. (4)


Or


(i) Explain the basic types of soil erosion and agents responsible for soil erosion. What are the conservation practices employed to prevent soil erosion? (16)


14. (a) (i) What do you mean by sustainable measures to attain sustainability. (8)
(ii) Discuss the salient features of
(1) Wild life (protection) Act (4)
(2) Forest (conservation Act). (4)

Or

(b) Discuss the objectives and various measures of wasteland reclamation and development. (16)

15. (a) (i) How can age - structure pyramids serve as useful tool for predicting population growth trends of a nation? Explain with examples. (12)
(ii) What are the impacts of population explosion over the environment? (4)

(b) Discuss the role of Information Technology in Environment and Human health. (16)