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EEJ MAIN Chemistry QUESTION #1005
Question 1
Statement (I): Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure metal as a cathode. Statement (II): The rate of corrosion is more in alkaline medium than in acidic medium.
  • Both Statement I and Statement II are true
  • Statement I is false but Statement II is true
  • Statement I is true but Statement II is false✔️
  • Both Statement I and Statement II are false
Correct Answer Explanation
Statement I is correct — in corrosion, pure metal (more reactive) acts as anode and gets oxidized, while impure metal acts as cathode. Statement II is false — corrosion is faster in acidic medium than alkaline medium because \(\text{H}^+\) ions accelerate the oxidation process.