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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. If the PH of a solution is two, then it would be a .....
Q2. pH of 0.1m NaOH would be…….
Q3. pH of 0.01 m HCl is.......
Q4. From among the following alloys which one is used for making transformers and electromagnets?
Q5. Dilute solution of Vinegar is called……
Q6. In which of the fields below, liquid ammonia is used?
Q7. The anhydrous sodium carbonate is called……
Q8. Manufacturing of ordinary glass requires which of the following raw materials?
Q9. Among the following which one is not an 'endothermic reaction'?
Q10. The term for the process of slow and uniform cooling is ....
Q11. What is the term for the chemical process that take place during efflorescence?
Q12. Among the following non-metals which one exhibits allotropy?
Q13. Which among the following does not conduct electricity?
Q14. Mercury containing alloy is called……
Q15. Among the following which one is a metalloid?
Q16. An alloy is a .......
Q17. The metal that exhibits allotropy is…..
Q18. Aqua regia can dissolve which of the following?
Q19. Which of the following is used to bleach cotton?
Q20. The chief source of phosphorous is.......
Q21. Which among the following is used for manufacturing rat poison?
Q22. Phosphorous is present in the brain in the form of……
Q23. Phosphorous has to be preserved under……….
Q24. The substance that is present at the tip of the match stick is.........
Q25. Red Phosphorous is used in…………
Q26. An atom as a whole is electrically ....
Q27. The charge of neutron is........
Q28. Combination of Deuterium with oxygen forms……
Q29. The electrons revolve around the……..
Q30. The charge of the nucleus in an atom is .....
Q31. "Matter" is made up of extremely small particles called…..
Q32. Isotopes of an element has……..
Q33. The radioactive isotope of hydrogen is.......
Q34. Among the following which one is most electronagative?
Q35. Among the following halogens which one is in the solid state?
Q36. What is the term for the elements of zero groups?
Q37. According to modern periodic law, the properties of elements are the periodic functions of their …………..
Q38. Magnesium belongs to……
Q39. Which type of carbon is used in the manufacture of steel?
Q40. Copper sulphate and lime water mixture is called?
Q41. Among the following which one is used as a "fungicide"?
Q42. What is the other name for Vitamin C?
Q43. What is the term for the total number of protons and neutrons in the nucleus of an atom?
Q44. Which one of the following is an allotrope of carbon that conducts heat and electricity?
Q45. What type of fire extinguisher should be used to put out electric fires?
Q46. Carbon atoms in the graphite are liked by…..
Q47. What causes the colors in diamonds?
Q48. What is the term for the science of pottery?
Q49. Sodium Salt of fatty acids are known as……..
Q50. Among the following which one is used as a moderator in nuclear reactors?
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