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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. Glowing of an electric bulb is a .....
Q2. Cooking of food is an example of ........ change
Q3. By which process a mixture of iodine and sand can be separated and purified?
Q4. Of the following which one goes sublimation process?
Q5. Amalgam alloy mainly contain metal with which of the following?
Q6. Bromine is a .....
Q7. Mercury is a .......
Q8. Tungsten filaments are used in ........
Q9. Brass is an alloy of copper and .......
Q10. Which of the following is commonly used in aeroplane bodies?
Q11. An alloy is a mixture of .......
Q12. Symbol for the element sodium is......
Q13. Silver is known as ...... in Latin.
Q14. Gold is known as ...... in Latin
Q15. NaCl is an example of a ....... molecule.
Q16. Which of the following is not a sub-atomic particle?
Q17. ....... are pure substances made up of the same types of atoms.
Q18. Of the following, which element is present in milk?
Q19. Why the bricks are red in color?
Q20. Starch and Cellulose belong to .....
Q21. Of the following which one is a monosaccharide?
Q22. Of the following carbohydrates, which one is the most present on earth?
Q23. Of the following, which one is used as a moderator in nuclear reactions?
Q24. Which of the following is essential for combustion?
Q25. What gives various colours to the diamonds?
Q26. Of the following which one is a carbon compound?
Q27. Of the following which one is not a chemical change?
Q28. Which of the following when used to treat water, removes the muddy particules and makes the water potable?
Q29. What process take place when a perfume bottle is opened?
Q30. Why the liquid metal mercury is used in thermometers?
Q31. What is the most common substance found one earth?
Q32. Of the following which one is called "Universal Solvent"
Q33. What is added to produce high refractive index glasses?
Q34. The first scientist to synthesise an organic compound in the laboratory was..
Q35. By what term the ability to do work is known?
Q36. Nuclear energy is ...... source
Q37. Of the following, which one is used in spacecrafts?
Q38. Of the following, which one is non-renewable source of energy?
Q39. Of the following, which one is renewable source of energy?
Q40. The solar energy is converted to ...... Energy during photosynthesis.
Q41. Among the following which one is an example of electrolyte?
Q42. Purity of food substances are given with ......... Certification.
Q43. Which of the following is used for coating a substance flame proof?
Q44. Of the following which is a conductor?
Q45. Which of the following is used to put out an oil fire?
Q46. A liquid metal which is a good conductor is........
Q47. The reagent added to check the fungus affected pepper is.......
Q48. The dye which is mixed with pulses is.......
Q49. Which of these is generally used as an adulterant in ghee?
Q50. Anhydrous copper sulphate is…………… in colour
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