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Khub.info Learn TNPSC exam and online pratice
Q1. Which rays has lowest ionising power?
Q2. Which rays have the same velocity as that of lights?
Q3. Which rays is used to find structure of atoms?
Q4. Which rule gives the direction of induced current?
Q5. Which rule gives the direction of the deflection or radioactive radiation?
Q6. Which rule is used in DC generator?
Q7. Which satellite is used to estimate crop fields and detect fishing zone?
Q8. Which science deals with the study of heavenly bodies?
Q9. What is the role of ultraviolet radiation in the water purification systems? (1) it inactivates/kills the harmful microorganisms in water. (2) it removes all the undesirable odours from the water. (3) It quickens the sedimenttion of solid particles, removes turbidity and improves the clarity of water. Pick the correct statement/s.
Q10. Which source of energy is not dependent upon energy of sun?
Q11. Which spectrum has well defined sharp boundaries and do not merge with each other?
Q12. Which star is nearest to earth?
Q13. Which sub atomic particle has. no charge?
Q14. Which substance depletes the ozone layer?
Q15. Which substance exhibit the property of viscosity?
Q16. Which substance is used t pour around the ships to calm sea waves?
Q17. Which substances exist in both crystalline and amorphous state?
Q18. Which target material is used in the production of X- rays.
Q19. Which telescope is used for seeing in dark?
Q20. Which theory is given by a - particle model?
Q21. Which theory states that matter was thrown out in all direction in the form of galaxies?
Q22. Which theory supports Raman effect?
Q23. Which type of power station takes the least time to start up?
Q24. Which type of waves are produced in water?
Q25. Which water does not conduct electricity?
Q26. Which wave does not require medium to its propagation?
Q27. Which wire used to absorb shock in domestic electric appliances?
Q28. White light is made up of how many colours?
Q29. Who conducted an experiment by passing electricity through gases at reduced pressure?
Q30. Who detected IR rays?
Q31. Who detected UV rays?
Q32. Who discovered nucleus?
Q33. Who discovered photo electric effect?
Q34. Who discovered radio activity?
Q35. Who discovered Radioactivity?
Q36. Who discovered the nuclear fission reaction?
Q37. Who discovered X- rays?
Q38. Who established electric nature of matter?
Q39. Who established the wireless communication across the English channel?
Q40. Who experimentally studied the natural radio activity?
Q41. Who first established the relation between electricity and magnetism?
Q42. Who first showed the existence of negatively charged particles in an atom?
Q43. Who found the equivalence between mechanical and heat energy?
Q44. Who gave the first theory about the constituents of matter?
Q45. Who gives the direction. of the induced current?
Q46. Who invented artificial radioactivity?
Q47. Who investigated the phenomenon of dispersion ?
Q48. Who is the first observer of natural radioactivity .................
Q49. Who is the first one to study experimentally the scattering of light?
Q50. Who performed gold foil a-particle scattering?
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