Which is the main source of Naphthalene?

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Which is the main source of Naphthalene?

1.Charcoal

2.Camphor

3.Coal-tar

4.Titanium

Posted Date:-2021-11-11 04:59:38

More MCQS Questions and answers

  1. 18Ar40 and 20Ca40 are __ of each other?
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  9. The aqueous solution of which among the following acids is called Vinegar?
  10. The exceptionally low melting point of mercury can be explained on the basis of which of the following explanations?Mercury has completely filled-up atomic orbitals 2. In mercury, the binding energy of outer electrons (towards nucleus) is highest and no electron is available to participate in metallic bond formation Choose the correct option from the codes given below:
  11. The irritation caused by sting of ants and bees can be neutralized by using soap because sting comprises which of the following acid?
  12. What happens to the weight of Iron, when it rusts?
  13. What is the 4th state of matter?
  14. What is the equilibrium distance for Hydrogen atoms?
  15. What is the nature of Drinking soda?
  16. What is the status of total energy at any time during the interconversion of energy from one form to other forms?
  17. What is the unit of Stress?
  18. What is the use of iodoform?
  19. Which among following is also known as white gold?
  20. Which among the following are constituents of Brass?
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  27. Which among the following is popularly called Hypo?
  28. Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium sulphates?
  29. Which is the main source of Naphthalene?
  30. Which metal does not present in the alloy “German Silver”?
  31. Which of the following atomic property was used by Dmitri Mendeleyev to arrange the elements into his periodic table?
  32. Which of the following elements have a compound named as Hydrogen peroxide?
  33. Which of the following elements is present in heavy water?
  34. Which of the following gas is also known as laughing gas?
  35. Which of the following gas is responsible for burning of eyes when we cut an onion?
  36. Which of the following is correct about Acetylene?
  37. Which of the following is correct about Hard water?
  38. Which of the following is correct about Potassium sodium tartrate tetrahydrate?
  39. Which of the following is incorrect?
  40. Which of the following is not a metalloid?
  41. Which of the following is not a non-metallic mineral?
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  46. Which of these compounds is also known as wood spirit?
  47. Which of these drugs help to reduce or abolish pain without causing impairment of consciousness?
  48. Which of these non-metals is commonly used in fire-crackers?
  49. Which particle is the most essential component to continue the chain reaction during the uranium fission?
  50. Which two elements were discovered by Marie Curie?
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