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General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements1 Mark
MCQ
Gangue have:
  • A
    Sand and soil.
  • B
    Silt.
  • C
    Gravel.
  • ✓
    All of these.
✓

Answer

Correct option: D.
All of these.
  1. Mineral is a naturally occurring substance that is solid and inorganic represented by chemical formula and has ordered structure. Minerals are differentiated based on their physical and chemical properties.
  2. Ore is a type of rock that contains sufficient minerals with metals which are economically extracted by mining. Metal ores are generally oxides, sulphides,silicates. The ores are processed to extract metals.
  3. Gangue are the impurities which are mixed closely with the ores. It is unwanted material which is of no market value and it is waste rock or mineral or sand etc.

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