Environmental Issues / Sustainable Development
1. What is ‘greenhouse effect’? What are its adverse effects on the Earth’s environment?
2. What steps are being taken to check the same? (1995/40)
3. What is lead-free petrol? What are its merits and demerits? (1995/20)
4. What is El Nino? What is its relevance to India? (1995/3)
5. What is ozone hole? How is it caused and what are its implications for life on Earth? (1999/20)
6. What is CNG? How can it reduce air pollution? (1999/3)
7. What are greenhouse gases? What impact do they have on the Earth’s climate and with what consequences? Elaborate. (2000/15)
8. 7. What does the Montreal Protocol deal with? Discuss its role in protecting Earth’s environment.(2001/15)
1. Plastic hazards - Discuss. (2002/30)
2. Discuss about ‘Environment’, its components and its awareness. (2002/15)
3. What do you understand by depletion of ozone layer and why is it considered harmful? Name ozone depleting substances and processes. What international ramifications took place to protect the ozone layer and what was the target agreed upon? (2003/30)
4. “Global Warming”, Discuss. (2004/30)
9. Describe the sources of ionizing and non-ionizing radiations and their effects on the biotic components of the atmosphere.. (2005/30)
10. Why do environmentalists regard asbestos and polythene as pollutants? (2005/15)
11. Justify with necessary logic “Biological clean-up methods can be cheaper than the conventional physical and chemical pollution treatments”. (2006/30)
5. Differentiate between Natural and Cultural heritage. (2007/30)
12. Write about: The UN conference on Environment and Development (The Earth Summit) (2007/15)
13. Answer any one of the following questions: (2007/30)
14. Explain the phenomenon of ozone depletion, its causes and effects. What effects are needed to reduce it?
15. What do you understand by the term ‘biodiversity’? Examine the causes and consequences of degeneration of biodiversity.
Health
1. What is AIDS? Describe its salient features. (1995/40)
2. What is ELISA? What is it used for? (1995/3)
3. What is pacemaker? How does it work? (1995/2)
4. What is bioremediation? (1995/2)
5. What is HIV? What does it cause? (1996/3)
6. What is Polio? Name its few features and how it can be prevented. (1997/20)
7. Why the HIV is considered so dangerous? Why has the spread of the virus proved so difficult to contain, especially in the poorer countries of the world? (2000/30)
8. Write about Anthrax. (2003/2)
9. Write brief note on Aspartame. (2008/2)
10. Write brief note on Gene doping. (2008/2)
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