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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 · 2022 · Paper II, Chemistry · Q4 of 120

Geo-Scientist Prelims 2022 Chemistry Q4: The covalent radius of C atom is 0·77 Å and that of H atom is 0·37…

QuestionChemical bonding / covalent radius

The covalent radius of C atom is 0·77 Å and that of H atom is 0·37 Å. What is the internuclear distance between C and H atoms in CH₄ molecule?

  1. (a) 1·14 Å
  2. (b) 1·20 Å
  3. (c) 1·25 Å
  4. (d) 1·41 Å

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