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Question

A non-metallic mineral used in abrasives is

  1. Asbestos
  2. Corundum
  3. Sulphur
  4. Fluorspar

A
Corundum
B
Sulphur
C
Asbestos
D
Fluorspar
Solution
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Abrasives are materials that are used to finish or polish a piece through rubbing. The most common natural abrasives used commercially are enamel finishes, plastic and tile. These are used for for polishing and cleaning metal. A non-metallic mineral used in abrasives is corundum. It is a crystalline form of aluminium oxide.
Thus, the correct answer is 'Corundum.'

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