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Question

Vessels made of metals like Al, Fe, Cr, Ni etc. can be used to store conc. HNO3.
If true enter 1, else enter 0.

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Solution

Vessels made of metals like Al, Fe, Cr, Ni etc. can be used to store conc. HNO3 because there is formtion of a protective oxide layer on the surface of the metal when it reacts with HNO3. Hence, vessels of such metals can be used to store HNO3.
Hence, correct answer is 1.

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