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SSC CPO 2019 PYQ — Question 98

SSC CPO Tier I - 11th December 2019 - Shift 1 • General Awareness • Q98

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Corundum is an ore of:

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Correct answer: D

Explanation

The correct answer is option 4 i.e. aluminium.

                             Corundum
  • Corundum is a crystalline form of aluminium oxide (Al2O3).
  • It contains traces of iron, titanium, vanadium, and chromium.
  • Pure corundum is rare in nature, and colourless.
  • It is found in igneous, metamorphic, and sedimentary rocks.
  •  It is used for grinding optical glass and polishing metals and grinding wheels.