Environmental Science: Theory into Practice – I — DU Ability Enhancement Courses Previous Year Question Papers

PART A (30 Marks) 1. (a) Expand the followings : (5x1=5) (b) State True or False : (5x1=5) (i) Biodiversity increases ecosystem stability. (i) Acid rain improves soil fertility. (iii) Renewable resources can regenerate naturally. (iv) Ozone layer depletion is caused mainly by CFCs. (v) Wetlands act as natural water filters. 2. Write short notes on the following (Any Two) : (5x2=10) (a) Ecosystem services (b) Water cycle 3. Explain the importance of biodiversity for human welfare. Discuss the major threats to biodiversity in India. (5+5=10) 4. Discuss the causes and impacts of air pollution in urban areas. Suggest suitable control measures. (5+5=10) 5. Explain different methods of solid waste management. Discuss the importance of the 3R principle in sustainable development. (5+5=10) PART B (20 Marks) 6. Discuss the importance of renewable energy resources in India. Explain the advantages and limitations of solar energy. (10) 7. The table below shows population growth and waste generation in selected cities of India. City Population (Million) Waste Generated (Tonnes/day) Answer the following questions : (a) Which city generates the highest amount of waste? (2) (b) Explain two environmental problems caused by improper waste disposal. (4) (c) Suggest measures for effective waste management in urban areas. (4) 8. The table below shows annual rainfall in four regions. Region Annual Rainfall (cm) Answer the following questions : (a) Identify the region with the lowest rainfall. Give one reason. (3) (b) Which region receives the highest rainfall? Mention one environmental advantage of high rainfall. (3) (C) Discuss the importance of rainwater harvesting in water conservation. (4) PART C (20 Marks) Explain the role of environmental movements in India with reference to the Narmada Bachao Andolan and Silent Valley Movement. (10) 10. Discuss the causes, impacts, and control measures of water pollution. (10) 11. Explain the importance of environmental education in promoting sustainable development and environmental awareness. (10)