GENERAL KNOWLEDGE | QUIZ | CHEMISTRY | 13 | QUESTIONS BASED ON CHEMISTRY

DIRECTIONS : Questions based on Chemistry.

61.     What is the chemical name for marble?
      A.  Potassium nitrate
      B.  Calcium carbonate
      C.  Titanium dioxide
      D.  Calcium bicarbonate
 Ans: C.

62.     Which of the following metals is in liquid state at normal room temperature?
      A.  Gallium
      B.  Radon
      C.  Silicon
      D.  Sodium
  Ans: A.

63.     The chemical name of bauxite is
      A.  Aluminium oxide
      B.  Aluminium chloride
      C.  Aluminium sulphite
      D.  Hydrated aluminium oxide
  Ans: D.

64.     Which of the following is the hardest element?
      A.  Copper
      B.  Diamond
      C.  Iron
      D.  Silicon
  Ans: B.

65.     Biogas mainly contains
      A.  Oxygen
      B.  Carbon dioxide
      C.  Methane
      D.  Nitrogen
 Ans: C.