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Ananya Shree

Class 10th
Science
2 years ago

Explain the following: (a) Reactivity of Al decreases if it is dipped in HNO3.

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Muskan Anand

2 years ago

On dipping in HNO3, the surface of Al is oxidised to form an oxide layer of Al2O3, which is hard and impervious. It acts as a protective layer for Al underneath. Hence, reactivity of Al decreases.

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