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UPSC Combined Geo-Scientist

Chemist

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

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2020 · Paper I, General Studies · Q89 of 120

Geo-Scientist Prelims 2020 General Studies Q89: Name the scientist who was NOT associated with the work of periodic…

QuestionChemistry / periodic table

Name the scientist who was NOT associated with the work of periodic classification of elements?

  1. (a) Dmitri Mendeleev
  2. (b) Robert Bunsen
  3. (c) Johann Wolfgang Dobereiner
  4. (d) John Newlands

Answer: (b) Robert Bunsen

Periodic classification: Döbereiner (triads), Newlands (octaves), Mendeleev (periodic law), also Lothar Meyer and Moseley. Bunsen is known for the burner and spectroscopy (with Kirchhoff), not periodic classification.

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