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Welcome to our comprehensive study resource for Unit-11 on Chemical and Biological Hazards, specially curated for IGNOU students preparing for the 2025 academic year. At eGyanKosh, we understand the importance of accessible and reliable educational materials, which is why we offer free downloads of essential study guides, notes, and resources. This unit delves into the critical aspects of chemical and biological hazards, equipping learners with the knowledge required to identify, assess, and mitigate risks associated with these issues. Whether you are studying independently or seeking supplementary resources for your coursework, our materials aim to enhance your understanding and support your academic success.