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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. "Amalgam" is a mixture of a metal with…………….
Q2. Ammonia is a compound of hydrogen with........
Q3. Rusting is a process of .....
Q4. The metal which is liquid at room temperature is .......
Q5. The chemical name of "Caustic Soda" is .......
Q6. The Chemical name for Common Salt is Sodium .........
Q7. The chemical name of 'Plaster of Paris' is .......
Q8. The common name for ' Sodium Carbonate ' is ………………..
Q9. Brass is a compound of ………………
Q10. "Type Metal" is a compound of .......
Q11. "Rock Salt" mainly consists of ………………
Q12. DDT was invented by ………………
Q13. "Atomic Theory" was developed by .......
Q14. "Vulcanization" is a ............
Q15. The process of converting metals into thin sheets is called as .......
Q16. The main constituent of gobar gas is ......
Q17. Mercury is obtained from .....
Q18. The gas released by automobiles is……………..
Q19. The gas emanating from unclean public urinals is.........
Q20. The acid used in car battery is ........
Q21. The mass of one mole of Ozone is ........gm
Q22. Law of Multiple proportion was given by…………………
Q23. German Silver is an alloy of ..........
Q24. Which one of the following occurs in its native form?
Q25. Sodium Silicate is also called as ..........
Q26. Buton-2-ol is………………alcohol
Q27. Formic acid is present in………………
Q28. What would be the l value for an electron having n value 2?
Q29. Gram molecular mass of nitrogen is
Q30. Law of conservation of mass is applicable to….
Q31. Which of the following alloy steels does not contain chromium?
Q32. Percentage of methanol in Denatured alcohol is…………….
Q33. Pure anhydrous acetic acid is known as ..........
Q34. Pyrolysis is .........
Q35. A substance which accepts one or more electrons from the other is called .......
Q36. How many moles are represented by 36 gm of water?
Q37. The ratio of the volumes of reactants are products in the formation of ammonia is......
Q38. Ionic reaction is an example for ……………reaction
Q39. .......is the gangue present in the Haematite ore
Q40. A mixture of aluminium powder and ammonium nitrate is called…………….
Q41. Consider the following statements: (1) Natural gas occurs in the Gondwana beds (2) Mica occurs in abundance in Kodarma and (3) Dharwars are famous for petroleum.
Q42. .........is the non-metal found in liquid state
Q43. Alcohol is a/an .......of electricity
Q44. ………………..is a dilute solution of ethanoic acid
Q45. Poisonous gases can be removed by ..........
Q46. The quantum number which gives the orientation of a given electron is ........quantum number
Q47. Gram molecular mass of carbon dioxide is........gm
Q48. The rate of the reaction ........with increase in concentration
Q49. The process used for removing the gangue from the ore is known as .......
Q50. The principal ore of iron is ………………