TNPSC GROUP 1/GROUP 2 (STUDY WITH ME)

Today's exam analysis

Today combined technical exam GS question 👆

பள்ளிகளில் சிக்கன் பிரியாணி போட வேண்டும் என்று சொல்லும் கல்வி அமைச்சர் சொல்லி கொடுக்க ஆசிரியர் பணியிடங்கள் நிரப்ப யோசிக்காமல் இருப்பது தான் இங்கு வருத்தம்....

📚 Chemical Formula 📚 1. Oxygen—O₂ 2. Nitrogen—N₂ 3. Hydrogen—H₂ 4. Carbon dioxide—CO₂ 5. Carbon monoxide—CO 6. Sulfur dioxide—SO₂ 7. Nitrogen dioxide—NO₂ 8. Nitrogen monoxide (nitric oxide)—NO 9. Dinitrogen oxide (nitrous oxide)—N₂O 10. Chlorine—Cl₂ 11. Hydrogen chloride—HCl 12. Ammonia—NH₃ ▪️Acid 13. Hydrochloric acid—HCl 14. Sulfuric acid—H₂SO₄ 15. Nitric acid—HNO₃ 16. Phosphoric acid—H₃PO₄ 17. Carbonic acid— H₂CO₃ ▪️Alkali 18. Sodium hydroxide—NaOH 19. Potassium hydroxide—KOH 20. Calcium hydroxide—Ca(OH)₂ Salt 21. Sodium chloride—NaCl 22. Carbonate sodium—Na₂CO₃ 23. Calcium carbonate—CaCO₃ 24. Calcium sulfate—CaSO₄ 25. Ammonium sulfate—(NH₄)₂SO₄ 26. Nitrate potassium—KNO₃ Commercial and chemical names of common chemicals Commercial name—IAPUC name—Molecular formula 27. Chalk—Calcium carbonate—CaCO₃ 28. Grape extract—Glucose—C6H₁₂O6 Alcohol—Ethyl 29. Alcohol— C₂H5OH 30. Caustic potash - Potassium hydroxide - KOH 31. Baking soda - Sodium bicarbonate - NaHCO₃ 32. Lime - Calcium oxide - CaO 33. Gypsum - Calcium sulphate - CaSO₄.2H₂O 34. T.N.T. — Tri nitro tolene — C6H₂CH₃(NO₂)₃ 35. Washing soda — Sodium carbonate — Na₂CO₃ 36. Blue vitriol — Copper sulphate — CuSO₄ 37. Ammonium chloride — NH₄Cl 38. Alum — Potassium aluminium sulphate — K₂SO₄Al₂(SO₄)₃.24H₂O 39. Slaked lime — Calcium hydroxide — Ca(OH)₂ 40. Starch — Starch — C6H10O5 41. Laughing gas — Nitrous oxide — N₂O 42. Red medicine — Potassium permanganate — KMnO₄ 43. Red vermilion — Lead peroxide — Pb₃O₄ 44. Dry ice — Solid carbon dioxide — CO₂ 45. Saltpetre — Potassium nitrate — KNO₃ 46. Vinegar — Dilute solution of acetic acid — CH₃COOH 47. Borax — Na₂B₄O7.10H₂O 48. Spirit — Methyl alcohol — CH₃OH 49. Slate — Silica Aluminium oxide — Al₂O₃2SiO₂.2H₂O 50. Green vitriol — Ferric sulphate — Fe₂(SO₄)

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