The passivity of iron in concentrated nitric acid is due to [MP PMT 19

1.	The passivity of iron in concentrated nitric acid is due to [MP PMT 1994]
A.	Ferric nitrate coating on the metal
B.	Ammonium nitrate coating on the metal
C.	A thin oxide layer coating on the metal
D.	A hydride coating on the metal
Answer» D. A hydride coating on the metal

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The passivity of iron in concentrated nitric acid is due to [MP PMT 1994]

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