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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. SI unit of the solar constant is
Q2. Small insects can move about on surface of water, why?
Q3. Scattering of light is of ........... types
Q4. Roughly, liquids expand ......... times more than solids.
Q5. Reynolds number determine.
Q6. Resistance offered by the conductors does not depend on of the conductor ...........
Q7. Refractive indices of different materials are Air­1.0013, Turpentine-1.47, Ruby-l.71, Diamond-2.42. In which velocity of light is maximum?
Q8. Real image is
Q9. Reactors which convert nuclear energy into electronic power are called ............
Q10. Rays of light travelling from a rarer medium to a denser medium will ...........
Q11. Rays of light traveling from a rarer to a denser medium will
Q12. Radioactive nuclei do not emit
Q13. Radio waves are used in
Q14. Radio waves are produced by
Q15. Radio isotope promethium is used for ............
Q16. Propagation of wave transfers
Q17. Pressure is defined as
Q18. Producer gas is a mixture of
Q19. Plants and humans when exposed to UV rays in small dose produce
Q20. Polarity of an electromagnet gets reversed by
Q21. Pick out the correct statement.
Q22. Pick out the correct answer:
Q23. Photo electric emission is
Q24. Phenomenon of mirages is observed in desert due to
Q25. Phases of moon are observed because
Q26. Persons working in Nuclear power station must wear aprons made of
Q27. Person who cannot see the nearby objects has a defect of
Q28. Pascal is the unit of
Q29. People who have difficulty is seeing the distant object is suffering from
Q30. Parallel light rays appear to pass through ............ after refraction from concave lens
Q31. Out of 60 W and 40 W lamps, which one has a higher electrical resistances when in use?
Q32. One unit of electrical energy is
Q33. One tuning fork completes 1000 oscillations in 5 sec, its frequency is
Q34. One microampere is equal to
Q35. One newton approximately equals the force of gravity acting on an object of grams
Q36. One kilowatt (kw) is equal to ...........
Q37. One mega watt is .......... w
Q38. One horse power is equal to .............
Q39. One horse power is equal to ...........
Q40. One cannot see through fog because
Q41. One ampere is equal to
Q42. On which principle the hydrogen bomb works?
Q43. On which factor does the capillary rise or fall in a capillary tube depend?
Q44. On what principle carburetor produces petrol and air mixer?
Q45. On what law the principle function of jet aeroplane is based?
Q46. On plucking the string of violin which waves are produced?
Q47. On a rainy day, wet cloth takes longer time to dry because larger amount of vapour already present in the air, the evaporation.
Q48. Ohms gives the relation between potential difference and ...........
Q49. Of late, in which year Halley’s comet showed its appearance?
Q50. Of what material the rod or stem in a gold leaf electroscope is made up?
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