Unit - 1 - Role and impact of Science and Technology in the development of India and Tamil Nadu 1. Physics Nature of Universe 2. Physics - Physical Quantities 3. Physics-Mechanics and Properties of Matter 4. Physics Force Motion and Energy 5. Physics Heat 6. Physics Light 7. Physics Sound 8. Physics Magnatism 9. Physics Electricity 10. Physics Electronics 11. Chemistry Elements and Compounds 12. Chemistry Acids Bases and Salt 13. Chemistry Oxidation and Reduction 14. Chemistry Carbon and Nitrogen 15. Chemistry Pesticides Fertilizers and Insecticides 16. Chemistry Oil Exploration 17. The Cell Basic Unit of Life 18. Classification of Living Organisms 19. Nutrients and Dietetics 20.Respiration 21. Blood and Blood-Circulation 22. Endocrine System 23. Reproductive System 24. Animals Plants and Human Life 25. Genetics 26. The Science of Heridity 27. Health and Hygine 28.Human Diseases Prevention and Remedies 29. Alcholism and Drug Abuse 30. Ecosystem 31. Bio Diversity and Its Conservation 32. Science and Technology Policies 33. S&T Organisation on Science and Technology 34. Advancement in the Fields of Science and Technology 35. S&T Computer Science and Applications