• Attempt all parts.
• Students are advised to specially check the Numerical Data of Question paper in both versions. If there is any difference in Hindi Translation of any question, the students should answer according to the English version.
• Use of Paper and Mobile Phone by the students is not allowed.

1. Answer any two parts of the following: [2×5=10]
   • Explain the term’eco-system’. How do human activities harm marine system.
   • Write a note on Biodiversity.
   • Explain the sources of air pollution and their types.
2. Answer any three parts of the following: [3×4=12]
   • What is Ecological Balance? Discuss the factors which maintain ecological balance.
   • What are the health effects of air pollution?
   • Explain the method of waste water disposal.
   • What is B.O.D and why is it relevant to the context of water pollution?
   • Describe the health risks associated with hazardous wastes.
3. Answer any two parts of the following: [2×4=8]
   • Explain echo and its control.
   • Write short notes on threshold of Hearing.
   • Write the need of Environmental Management.
4. Answer any two parts of the following: [2×5=8]
   • Differentiate between hazard and disaster.
   • What are the factors responsible for risk?
   • Write the effects of hazards on economy and development.
5. Write short notes on any four of the following: [4×3=12]
   • Shielding of Radio Active.
   • Guidelines to reduce Radiations in Exposure.
   • Disaster-Management
   • Causes of acid rain.
   • Water prevention and control of pollution act.
   • The Hazardous Waster.

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