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Khub.info Learn TNPSC exam and online pratice
Q1. Which of the following acts as 'semiconductor'?
Q2. Which of the following can be considered as a good conductor of electricity?
Q3. In an insulator, the valence band is.......
Q4. Band model of metallic bonding is based on which of the following?
Q5. Of the following bonds, which one is very strong?
Q6. Hydrogen molecule is diamagnetic in nature because it has……
Q7. If a substance contains large number of unpaired electrons, then it's nature will be ....
Q8. Of the following which one is not possible in a chemical bond?
Q9. What is the shape of p-orbital?
Q10. Molecular Orbital Theory was proposed by…….
Q11. The energy of an electron at infinity is assumed to be ?
Q12. The "Uncertainty Principle" was proposed by…..
Q13. Who introduced the elliptical orbits?
Q14. On which of the following the electron beam is allowed to fall according to J.J.Thomson experiment?
Q15. Who suggested the planetary model of an atom?
Q16. Who discovered the sub-atomic particle neutron?
Q17. Which of the following was proposed by Max Planck?
Q18. Which of the following was discovered by Mosely?
Q19. Nucleus of an atom was discovered by......
Q20. Who discovered the cathode rays?
Q21. Atom was discovered by……
Q22. What is the shape of 1s orbital?
Q23. Who was the first person to predict the interrelation of matter and energy?
Q24. From the following which one was discovered by Chadwick?
Q25. What is the term for the Eigen function for an electron?
Q26. What is the 'bond order' of Oxygen molecule?
Q27. Who explained the dual character of electrons?
Q28. What brings about the fermentation?
Q29. From among the following which one is used in the manufacutre of telegraph and telephone wires?
Q30. Ethyl alcohol is a ....
Q31. Of the following which one is added as bleaching agent to washing powders to increase the whiteness in fabrics?
Q32. Which of the following is used as a nail polish remover?
Q33. The percentage of ethanol in whisky is........
Q34. Bordeaux mixture is used as........
Q35. What is the acid present in sugarcane juice?
Q36. Which of these metals is commonly used as a conductor?
Q37. The energy liberated by fuels burning is........energy
Q38. Which of the following is manufacture by the 'sublimation' process?
Q39. Of the following elements, which one exhibits allotropy?
Q40. What is the element in our intake of food?
Q41. What is the term for the reaction of oxygen with carbon?
Q42. What is the term for the broken pieces of glasses added in the manufacture of glass?
Q43. What is the natural source of dyes?
Q44. Of the following methods, which one is used in the electroplating and electrorefining processes?
Q45. A solution of gum in water is known as........
Q46. Of the following noble gases, which one is present in natural gas?
Q47. What is the term for the elements forming a group from atomic numbers 58 to 71?
Q48. Which one of the following factor increases down the group?
Q49. By how many times the proton is heavier than the mass of an electron?
Q50. Of the following which one is the poor conductor of electricity?
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