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UPSC Combined Geo-Scientist

Chemist

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

Mains Paper I covers inorganic chemistry.

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

Q7(a). Band theory: conductors, semiconductors and insulators

Question

Explain band theory with an example. Using the band theory distinguish between conductors, semiconductors and insulators.

Model answer

The free solution for 2018 answers questions 1, 3, 4, 6, 8 and 11, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.

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Coversband theorysemiconductorsband gapconductors and insulators

All parts of Question 7