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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. The geothermal energy is drawn in the form of............
Q2. Half of all industrial water use is for the purpose of .....
Q3. .............is a non-renewal form of energy.
Q4. ...............is the poisonous and carcinogenic substance used in manufacturing solar cells.
Q5. Pick the correct answer for the Assertion and Reason given below: Assertion: A coin placed on a rotating table flies off. Reason:Friction between the turntable and the coin is not sufficient to provide the necessary tripetal force.
Q6. Pick the correct answer for the Assertion and Reason given below: Assertion: 2 Pentene exhibits cis-trans isomerism.Reason:Free rotation around a double bond is possible.
Q7. If the door of a refrigerator is left open inside a closed room, then the temperature of the room will
Q8. The approximate height of a geostationary or synchronous satellite from the surface of the earth is....
Q9. During electrolysis, the cations and anions of the electrolyte are:
Q10. A car parked in the sun with its windows closed gets terribly hot inside. This can b e explained by the concept of......
Q11. Pick the incorrect statement related to the relative strengths of bond:
Q12. Consider the Assertion and Reason given below and pick the correct answer: Assertion:All halogens are colou;red. Reason: Visible light is absorbed by halogens resulting in excitation of outermost electron to higher energy levels.
Q13. An ice cube floats on the surface of water which fills a tumbler up to its brim. What will happen when the ice cube melts?
Q14. Is it possible for a rocket to escape from earth if its initial speed is less than 11.2 Kms/s?
Q15. To which of the following the "Heisenberg's Uncertainty Principle" can be applied to:
Q16. Arrange the following colours in the increasing order of their wave-length: 1. Blue 2.Red 3.Yellow 4.Green
Q17. The atom of the element that does not have any neutron in its nucleus is....
Q18. What is the vapour pressure?
Q19. The process of change of state of water from solid directly into vapour is known as ......................
Q20. What will happen if the temperature of water is lowered from 8 degree to 3 degree C?
Q21. What is the speed at which a space vehicle has to travel to escape earth's gravitational pull?
Q22. What, when applied to snow or ice lowers the melting point of the mixture?
Q23. Who evolved the concept of relationship between mass and energy?
Q24. Who was the first to get Physics Nobel Prize?
Q25. Which physical phenomenon is attributed to the tendency of a liquid drop to assume spherical shape?
Q26. The dimples in a golf ball are meant to....?
Q27. In electronics, the two terminal electronic component that conducts electrict current in only one direction is called a .....
Q28. What is the antiparticle or the antimatter counterpart of the electron called?
Q29. Who is credited with the "wave theory of light"?
Q30. Which colour shows the maximum deviation when white light is passed through a prism?
Q31. The mass of water vapour in the atmosphere per unit of volume of space is called.....
Q32. At what temperature do Celsius and Farenheit read the same?
Q33. Sir C.V.Raman's "Raman Effect" deals with.......
Q34. Who discovered "gamma radiation"?
Q35. What is the term for the tendency of a force to rotate an object about an axis, fulcrum or pivot?
Q36. Which of these engines is an external combustion engine?
Q37. What is produced in a resistance of one Ohm by a potential difference of one volt?
Q38. What is the escape velocity required (per second) from the surface to leave the planet earth?
Q39. Geostationary satellites orbit in which belt over earth?
Q40. Who first discovered that an electrical current creates a magnetic field?
Q41. When the magnet is brought towards the coil, the number of magnetic lines of force linked with the coil ...........
Q42. When the number of turns in a current carrying circular coil increases, the magnetic field developed ............
Q43. When the object is placed at C for a concave mirror, the position of the image is
Q44. When the potential difference across a conductor is doubled the electric current in a conductor
Q45. When the potential difference cross the ends of the conductor is halved. the amount of heat produced is
Q46. When the string of sitar is plucked what waves are produced?
Q47. When the water vapour in the atmosphere condenses and clouds are formed, these clouds contain large amount of charges.
Q48. When the wavelength of incident wave is reduced to 1/4 of its initial value what will be the amount of scattering?
Q49. When two paints are mixed together, the final colour of the mixture is the colour they both
Q50. When water solidifies to ice
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