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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper III covers analytical and organic chemistry.

UPSC Combined Geo-Scientist, Mains · 2018 · Mains Paper III

Q5(b). Manganese oxide equivalent

Question

A 1.52 g ore sample yields 0.126 g Mn₃O₄. Find the percentage expressed as Mn₂O₃.

Answer in brief

The sample contains 8.579% Mn₂O₃ equivalent.

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CoversManganese oxide equivalentGravimetry

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