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Question:
Penicillin was first discovered by

1.Alexander Fleming

2.Antony van Leeuwenhoek

3.S. Waksman

4.Faraday

Posted Date:-2022-11-22 07:20:57

More MCQS Questions and answers

  1. Citrus fruit is a source of
  2. If we open a bottle of perfume, its smell spreads in the entire room within a short time due to the process of
  3. The process of converting solid into liquid on heating called
  4. The wire having a black plastic covering is a
  5. An element has electronic configuration 2,8,3. It will be classified as
  6. Atomic theory was given by
  7. Atomicity of Aluminium is
  8. Balanced diet should have
  9. Calcium deficiency occurs in the absence of vitamin
  10. Carbon dioxide is a compound because:
  11. Cholesterol is related to
  12. Electrolyte used in the voltaic cell is:
  13. Electromagnets are used in
  14. Germs entering the body through food are mainly killed in the region of alimentary the canal where pH may reach the level
  15. In a balanced chemical equation, the reactant side and the product side have the same number of
  16. Intermolecular space is the maximum in
  17. Marasmus is likely in children who get
  18. On heating, the liquid is converted into a gaseous state. This process is called
  19. Penicillin was first discovered by
  20. Sodium chloride is a salt of
  21. The best medicine to inject into the snake bite case is
  22. The canine tooth is meant for
  23. The chemical formula of a compound containing 2 atoms of hydrogen and 1 atom of sulphur is
  24. The chemical formula of a compound represents
  25. The correct sequence of taxonomic categories is
  26. The experiment which led to the discovery of proton was performed by
  27. The father of the green revolution in India is:
  28. The main source of protons are:
  29. The red rose seems red because:
  30. The resistance of a conductor ____ with rise in the temperature.
  31. The state in which molecular attractions are very least is
  32. Three resistances of 20 W, 15W and 20W are connected in series, the equivalent resistance will be:
  33. When magnesium is burnt in air. It produces magnesium oxide. The correct chemical reaction is:
  34. Which lens must be used in a spectacle to cure the hyper me logia defect of an eye?
  35. Which lens must be used in a spectacle to cure the hyper me logia defect of the eye?
  36. Which of the following acids is present in lemon?
  37. Which of the following animals has a gall bladder?
  38. Which of the following diseases is caused by a virus?
  39. Which of the following is a useful organism?
  40. Which of the following is neither an element nor a compound?
  41. Which of the following is not a chemical change?
  42. Which of the following is not a Kharif crop?
  43. Which of the following is not a mineral acid?
  44. Which of the following is not an acidic salt?
  45. Which of the following is not an organic acid?
  46. Which of the following process does not replenish the soil with nutrients?
  47. Which of the following sets includes the bacterial disease?
  48. Which of the following statements about a balanced chemical equation is not true?
  49. Which out of the following is a heterogeneous mixture?
  50. Who is known as the ‘Father of Biology’?
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