Model Question

B.E/B.Tech. DEGREE EXAMINATION, APRIL/MAY 2007 Third Semester Computer Science and Engineering CY 1201-ENVIRONMENTAL SCIENCE AND ENGINEERING Answer all the questions: PART A-(10 X 2=20 marks) 1. Differentiate between deforestation and forest degradation. 2. Enumerate the desired qualities of an ideal pesticide. 3. How does a biome differs from an ecosystem. 4. Define Genetic diversity and Species diversity. 5. Differentiate between recycling and reuse. 6. Give examples for primary and secondary air pollutants. 7. Define the term sustainable development. 8. What is a Dobson unit? 9. What are the reasons behind the increased population growth in the less developed nations compared with developed nations? 10. Differentiate between HIV and AIDS. PART B-(5 X 16=80 marks) 11.(a).(i).What are the ecological benefits of forests. (ii).”Environmental damages caused by mining last long after the mine has closed”. Explain. (Or) 11.(b).(i).Discuss the possible solutions to improve the acceptability of dam projects in Indian conditions. (ii).Explain the adverse environmental impacts of modern agriculture. 12.(a).(i).With a neat sketch explain the flow of energy through the various components of the ecosystem. (ii).Explain how fat-soluble pollutants like DDT get biomagnified. (Or) 12.(b).(i).Discuss the concept of ecological pyramid. (ii).Describe the term hot spot in biodiversity. 13.(a).(i).What is the significance of Dissolved Oxygen in rivers? Explain. (ii).What are the effects of oil pollution on the oceans? (Or) 13.(b).(i).With a flow diagram explain the Activated sludge process for wastewater treatment. (ii).Explain the concept of source, path receiver in the control of noise pollution. 14.(a).(i).Explain the mechanism of formation of acid rain. (ii).Discuss the phenomenon of global warming and the factors contributing to it.

(Or) 14.(b).(i).What are the salient features of the following acts (1).The Air (Prevention and control pollution) Act, 1981 (2).The Environment (Protection) Act 1986. (ii).Discuss the possible mechanism of stratospheric ozone depletion. 15.(a).(i).Draw a typical population pyramid of a developing country and discuss how it is likely to differ from that of a development country. (ii).Define Human Rights and discuss the salient features of the Universal Declaration of Human Rights by UN. (Or) 15.(b).(i).Outline the various family welfare plans in the post independent India. (ii).What are the modes of transmission of HIV and how it can be prevented? C0020 B.E/B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2008 THIRD SEMESTER HS1201 ENVIRONMENTAL SCIENCE AND ENGINEERING (Common to E&I, ECE, EEE, ICE and CIVIL) (REGULATION 2007) Time : Three hours Maximum : 100 marks Answer ALL questions. PART A – (10×2=20 marks) 1. What are renewable and non-renewable energy resources? Give examples. 2. Mention the factors causing soil erosion? 3. What are autotrophic and heterotrophic components of an ecosystem? Give examples. 4. What is ecological succession? Mention their types. 5. Classify air pollutants with suitable examples. 6. What is meant by BOD and COD? 7. How does ozone layer depletion take place? Write its consequences. 8. What is meant by sustainable development? 9. Define population explosion. 10. Write the expansion for HIV and AIDS. PART B – (5×16=80 marks) 11. (a) Discuss briefly the ill-effects of deforestation. (5) (b) Explain the benefits and problem of constructing dams. (5) (c) Write short notes on the problem of fertilizers and pesticides on modern agriculture. (6) Or 12. (a) Write an explanatory note on any two non-conventional energy resources. (8) (b) Discuss the uses and effects of over-utilization of surface and ground water sources. (8) 13. (a) Define ecological pyramid and write a short notes on their types. (6) (b) What is biodiversity? Discuss the genetic biodiversity and values of biodiversity. (10) Or 14. (a) Write short notes on energy flow in the ecosystem and food web. (6)

(b) What do you understand by conservation of biodiversity? Explain the ‘Insitu and Exsitu conservation along with their merits and limitations’. (10) 15. (a) Name and discuss the effects of water pollution. Suggest the various control and remedial measures to curb water pollution. (10) (b) Write brief notes on solid waste management. (6) Or 16. (a) Explain the effects of air pollution on human health, plants and animals. (8) (b) What is an earthquake? Enumerate its effects? Briefly explain the measures should be taken to mitigate this disaster. (8) 17. (a) What is ‘rainwater harvesting’? Name and discuss in brief the types of rainwater harvesting. (8) (b) Write note non salient features of environmental protection act. (8) Or 18. (a) Write brief note on global warming and acid rain. (8) (b) Discuss the issues involved in the enforcement of environmental legislation. (8) 19. (a) Enumerate the effects population explosion. (8) (b) What is ‘value education’? Discuss the concept of values education with the help of suitable examples. (8) Or 20. (a) Discuss the problems, diagnosis and control and AIDS. (8) (b) Discuss in detail the role of IT in protecting environment. (8) PRINCIPLES OF ENVIRONMENTAL SCIENCE AND ENGINEERING ANNA UNIVERSITY :: CHENNAI - 600 025 MODEL QUESTION PAPER B.E. / B.TECH. DEGREE PROGRAMMES CE071 - PRINCIPLES OF ENVIRONMENTAL SCIENCE AND ENGINEERING

Time: 3hrs Max Marks: 100

Answer all Questions PART - A (10 x 2 = 20 Marks) 1.

What are the different components of eco system?

2.

List the different Biogeo chemical cycles in the environment.

3.

List the different natural and man made impacts on the environment.

4.

Define policy cycle.

5.

Differentiate between trickling filter process and activated sludge process.

6.

What are the issues addressed by Montreal Protocol and Kyoto Protocol?

7.

List out the factors on which the amount of waste generation depends.

8.

What are the different modules of green chemistry expert system (GCES)?

9.

Define the polluter pays principle.

10. Give a very important, current environmental issue, which creates a major problems to the environment. PART - B (5 x 16 = 80 Marks) 11. 12.a)

Explain the concept of “Sustainable Development”. What are the components of the environment? Explain their inter – relationship.

(OR) 12.b) What are the causes and effects of air, water and land pollution? Enumerate a few remedial measures. 13.a) Define sewage and explain the municipal sewage treatment process. (OR) 13.b)

i) Explain the importance of protecting Biodiversity. ii) Explain different methods of air pollution control.

14.a) Write detailed note on waste minimization. (OR) 14.b)

Explain the concept of clean technology, Eco- mark and Green chemistry?

15.a)

Explain in Detail the Role of non-government organizations on the environment.

(OR)

15.b)

Explain in detail the process of EIA.