Chemistry

chemistry based questions
DIRECTIONS : Questions based on Chemistry.
86. Charcoal is
  A.  Amorphous
  B.  Crystalline
  C.  Hygroscopic
  D.  None of these
87. Cooking oil can be converted into vegetable ghee by the process of
  A.  Oxidation
  B.  Crystallization
  C.  Distillation
  D.  Hydrogenation

88. Another name for mercurous chloride is
  A.  Amalgam
  B.  Calomel
  C.  Blue vitriol
  D.  Plaster of paris
89. The chief source of aluminium is
  A.  Bauxite
  B.  Cargolite
  C.  Haematite
  D.  Feldspar
90. The major constituent of air is
  A.  Hydrogen
  B.  Carbon dioxide
  C.  Nitrogen
  D.  Oxygen