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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 · 2023 · Paper I, General Studies · Q13 of 120

Geo-Scientist Prelims 2023 General Studies Q13: Which one of the following semi-conductors possesses the highest…

QuestionSemiconductors / band gap

Which one of the following semi-conductors possesses the highest value of band gap \(E_g\)?

  1. (a) Si
  2. (b) Ge
  3. (c) GaAs
  4. (d) PbS

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