Which of the following metals has the highest rate of corrosion?

Potassium

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Zinc

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Iron

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Gold

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Solution

The correct option is A Potassium
As per the reactivity series, the order of reactivity of the given metals is: Potassium > Zinc > Iron > Gold.
Also, we know that more the reactivity of a metal, more will be its rate to get corroded. So, potassium will have the highest rate of corrosion.

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