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minerals

  •  English    30     Public
    quiz on minerals
  •   Study   Slideshow
  • _______ are valuable natural resource.
    minerals
  •  15
  • A _________ is a pure inorganic substances that occurs naturally in the earth's crust.
    minerals
  •  15
  • minerals are of two types ________ and __________
    metallic and non-metallic
  •  15
  • minerals from which metals can be profitable extracted are called ______.
    ores
  •  15
  • those minerals which contain metal are called ______.
    metallic minerals
  •  15
  • metallic minerals are called ______ if they have iron content and _________ in the absence of iron.
    ferrous and non-ferrous
  •  15
  • more than ______ minerals have been identified till yet
    2000
  •  15
  • industry depends on about _____ of them.
    80
  •  15
  • those which do not have metal content are called _______.
    non-metallic minerals
  •  15
  • _______ is the most useful mineral.
    iron
  •  15
  • ______ is used as a major component in tools, machines, automobiles, ships and much more.
    iron
  •  15
  • iron is used to make ______ which is used in a wide range of applications.
    steel
  •  15
  • __________ is the most important industrial ore.
    Magnetite
  •  15
  • _________ is also an important industrial ore.
    Hematite
  •  15
  • Hematite content ______ iron.
    70%
  •  15
  • Magnetite content _______ iron
    72%
  •  15