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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2021 · Paper II, Chemistry · Q71 of 120

Geo-Scientist Prelims 2021 Chemistry Q71: In acidic medium MnO₄⁻ converted to Mn²⁺. The quantity of…

QuestionElectrochemistry / Faraday's laws

In acidic medium MnO₄⁻ converted to Mn²⁺. The quantity of electricity in Faraday required to reduce 0.2 mole of MnO₄⁻ to Mn²⁺ would be:

  1. (a) 0.2
  2. (b) 0.4
  3. (c) 1
  4. (d) 2.5

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