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One Line Answer
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
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Solution
When aluminium is dipped in nitric acid a layer of aluminium oxide is formed on the metal. This happens because nitric acid is a strong oxidizing agent. The layer of aluminium oxide prevents further reaction of aluminium. Due to this, the reactivity of aluminium decreases.
Concept: Physical Properties of Metals
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