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Unfortunately, Mr. M. Subramanian, who maintained this website lost his battle to cancer and passed away in July, 2019. The database has over 50,000 questions. If you are interested in purchasing the website/database, please reach out using the form here.
Khub.info Learn TNPSC exam and online pratice
Q1. Which of the following complex salt is known as "Calgon"?
Q2. Sodium Aluminium Silicate is also known as ....
Q3. What is the yield when steam is passed over red hot coke in the presence of chromium oxide?
Q4. A binary compound of oxygen with another element is called an/a
Q5. What does "Oxygen" mean?
Q6. Presence of which of the following in the atmosphere reduces the activity of oxygen?
Q7. Hydrogen burns in air with a .......
Q8. Who gave Hydrogen the name "Water Producer"?
Q9. The adulterant in edible oil that causes cardiac arrest is.......
Q10. Electrode connected to the negative terminal of a battery is known as.........
Q11. Electrode connected to the positive terminal of a battery is known as .....
Q12. Which of the following types of fuels do not leave any undesirable residue?
Q13. A good fuel should have ......
Q14. The content of Soda acid type of fire extinguisher is......
Q15. Mac Arthur Forrest Cyanide Process is used for the extraction of ...
Q16. Of the following, which is/are isolated by electrolysis process?
Q17. By which process sodium is manufactured from fused sodium chloride?
Q18. By which process sodium is isolated from fused sodium chloride?
Q19. Of the following, which one is a liquid conductor?
Q20. From which of the following electric switches and handles of tea pots are made?
Q21. From the following pick a bad conductor of electricity?
Q22. Of the following which one is used as a raw material in the manufacture of nitric acid/
Q23. Nitre is ……………….
Q24. What is the chemical name of artificial silk?
Q25. Nitric acid acts as an/a ........ agent.
Q26. Dissolving of gold in aqua regia gives us……
Q27. Nitrochalk is the name of ..
Q28. Ammonia is a very good ...... Agent.
Q29. Of the following, which one is produced in nature by the action of bacteria on urine>
Q30. Of the following, which one is essential for the growth of plants?
Q31. In the free state carbon occurs as ........
Q32. Air is not ........but it is a .......supporter of combustion.
Q33. What is the principal constituent of dead and decayed matter?
Q34. What is the percentage of carbon in coke?
Q35. Of the following which one is used as a reducing agent in iron and steel industries?
Q36. Among the following which one is the purest for carbon?
Q37. Wood Charcoal is used in which of the following?
Q38. Fullerene is recent discovery in the form of .....
Q39. From among the fuels, pick the one that does not contain carbon?
Q40. Of the following which one is the charcteristic property of diamond?
Q41. The outcome of hydrogen burning is........
Q42. Of the following which one is not the characteristic property of Diamond?
Q43. The chemical reactions that take place in a primary cell are……
Q44. The chemical reations that take place in a secondary cell are…..
Q45. The energy available from fuels is .......energy.
Q46. Of the following energies, which one is associated with the motion of the body?
Q47. The decomposition reactions are generally ....... reactions.
Q48. Generally what reaction take place during the formation of compounds?
Q49. What is the mass of calcium oxide formed when 50g of Calcium carbonate is heated? (Atomic weight of Ca=40; C=12; and O=16)
Q50. From the following pick an example for petrochemical?