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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 · 2025 · Paper I, General Studies · Q30 of 120

Geo-Scientist Prelims 2025 General Studies Q30: Which one of the following reactions correctly represents the…

QuestionBiochemistry / respiration

Which one of the following reactions correctly represents the respiration reaction?

  1. (a) 2H₂ + O₂ → 2H₂O
  2. (b) C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
  3. (c) CH₄ + 2O₂ → CO₂ + 2H₂O
  4. (d) C₆H₁₂O₆ + H₂O → C₆H₁₂O₇ + H₂

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