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  9. Q55

CGPSC 2013 · Question 55 of 87

Which acid accumulates in the muscles to cause fatigue?

Science

  1. ALactic acidCorrect
  2. BPyruvic acid
  3. CCitric acid
  4. DUric acid
  5. EAcetic acid

Answer: A. Lactic acid

Explanation

Lactic acid accumulates in muscles during anaerobic respiration, causing fatigue.

Source: CGPSC Prelims 2013 GS Paper-I (held 8-6-2014), solved paper

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