41. What is the number of mole(s) of H2(g) required to saturate one mole benzene?
42. Which of the following hydrocarbons have only one structure?
43. Synthetic ethanol is produced by reacting ethene (in the presence of phosphoric acid) with
44. . . . . . . . . is an unsaturated hydrocarbon.
45. What are the elements present in alcohol?
46. During the first world war, which of the following gas was utilised as the chemical weapon?
47. Which of the following acids is present in ant bites?
48. Which of the following is the other name for 'marsh gas'?
49. Lactic acid is a:
50. Which one of the following carbon compounds will not give a sooty flame?
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