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Explain the following: a. Reactivity o...

Explain the following:
a. Reactivity of Al decreases if it is dipped in `HNO_(3)`. b. Carbon cannot reduce the oxides of Na and Mg.

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a. When alluminium reacts with nitric acid, the formation of a protective layer of `Al_(2)O_(3)` on the metal surface decreases the reactivity of Al.
b. Na and Mg are highly reactive metals with less affinity towards carbon.
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ZEN PUBLICATION-METALS AND NON METALS-ZEN ADDITIONAL QUESTIONS SECTION (SHORT ANSWER [SA] TYPE 1 QUESTIONS)
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