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All acids are ____________

  • A.Irritant when they are strong
  • B.Corrosive when they are weak
  • C.Corrosive when they are strong
  • D.None of these

Answer: C

All acids are corrosive when strong - a concentrated strong acid attacks metal, stone and living tissue.

Dilute or weak acids are irritant rather than corrosive; citric and acetic acids are safely eaten. Corrosiveness depends on both the strength of the acid and its concentration.

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