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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. …………alloy is used in the manufacture of telegraph wires
Q2. An example of secondary alcohol is ........
Q3. Sommerfield introduced the idea of motion of .......
Q4. Number of moles in 88 grams of Carbon di oxide is
Q5. Heating the ore in the absence of air strongly is called .......
Q6. The objects like pipes, stoves and hot water radiators are manufactured by ...
Q7. Sulphur is extracted from the earth crust by the process called
Q8. The IUPAC name for Tertiary butyl alcohol is
Q9. ..........solution is added to produce red colouration of Acetic Acid.
Q10. The main source of nitrogen dioxide as pollutant is ………………
Q11. In an atom no two electrons have the same set of four quantum numbers. It is .....
Q12. ......is a branch of Chemistry in which quantitative relationship between masses of reactants and products are established
Q13. The speed of the reaction ..........for every 10 degree Celcius rise in temperature
Q14. Which of the following metals occur in native form?
Q15. ........is the metal found in a liquid state
Q16. Ethanol is used as an ......
Q17. Environment friendly Chemistry is otherwise known as ........
Q18. The compounds water, dulphur dioxide and hydrogen sulphide illustrate
Q19. A metal which not a good conductor of heat and electricity is........
Q20. .........is used as a coagulant for rubber latex.
Q21. A solution whose normality is known, is called………….
Q22. The ratio of copper to oxygen in cupric oxide is.......
Q23. Rusting of iron is an example of
Q24. The purity of metal obtained by zone refining is ........
Q25. ..........is the slag obtained in the extraction of iron
Q26. The IUPAC nme of H-CHO is .........
Q27. D D T is an example for ………type of pollutant.
Q28. ……………is an industrial mineral used in manufacturing stainless steel.
Q29. Ascorbic acid is one form of
Q30. Who is generally considered the inventor of the Periodic Table, a tabular method of displaying the chemical elements?
Q31. Which is the first element listed in the periodic table of elements?
Q32. From which mineral did Pierre and Marie Curie extract a radium compound?
Q33. Ruby and Sapphire are varieties of which mineral?
Q34. Which Physicist discovered the neutron?
Q35. The gas which absorbs more heat than other green gases is
Q36. Hydrocarbons are formed during the manufacture of ....
Q37. In a dry cell (battery) which of the following are used as electrolytes?
Q38. Which one of the following is used as an explosive?
Q39. What is Biophenol (BPA)?
Q40. What are Rubies and Sapphires chemically known as?
Q41. Which one of the following is also called "Stranger Gas"?
Q42. Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
Q43. Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
Q44. Consider the following: (1) Rice fields (2) Coal Mining (3) Domestic Animals (4) Wetlands . Which of the above are sources of methane, a major green house gas?
Q45. Who among the following discovered heavy water?
Q46. Which one of the following does not contain Silver?
Q47. Which one of the following is called the "Philosopher's Wool"?
Q48. Which one of the following is another name for RDX?
Q49. Which are the materials generally employed as solder in soldering operation in electronics?
Q50. Consider the following chemicals: (1) Benzene (2) Carbon tetrachloride (3) Sodium Carbonate (4) Trichloroethylene. Which of the above is/are used as dry cleaning chemicals?