12th Chemistry 1. chapter-1-general-organic-chemistry 2. chapter-2-isomerism-structural-stereoisomerism 3. chapter-3-grignard-reagent 4. Chapter-4a-hydrocarbons-alkanes 5. Chapter-4b-hydrocarbons-alkenes 6. Chapter-4c-hydrocarbons-alkynes 7. Chapter-5a-alkyl-halides 8. Chapter-5b-alkyl-halides 9. Chapter-5c-alkyl-halides 10. chapter-6-alcohol-ethers-and-epoxides 11. chapter-7-aldehydes-and-ketones 12 chapter-8-aldol-and-cannizaro-reaction 13. chapter-9-carboxylic-acid-and-their-derivatives 14. chapter-10-amines 15. chapter-11-carbene-and-nitrene 16. chapter-12-aromatic-compounds 17. chapter-13-practical-organic-chemistry 18. chapter-14-biomolecules-2 19. chapter-15-iupac-name