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NEET2004ChemistryElectrochemistryActual

Assertion : Copper metal gets readily corroded is an acidic aqueous solution. Reason : Free energy change for this process is positive.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

D. If both assertion and reason are false.

Step-by-step solution

Copper corrodes at negligible rate in unpolluted air, water and deaerated non-oxidising acids. Pure copper and the high copper alloys can be considered to exhibit similar resistance to most Corrosive environments. They possess excellent resistance to atmospheric environments. (corrossion is a spontaneous process for which free energy change must be negative.

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