Pure conc. \[HN{{O}_{3}}\]makes iron passive as the surface is covered with protective layer of [Orrisa JEE 2002; EAMCET 1993]

Pure conc. \[HN{{O}_{3}}\]makes iron passive as the surface is covered

1.	Pure conc. \[HN{{O}_{3}}\]makes iron passive as the surface is covered with protective layer of [Orrisa JEE 2002; EAMCET 1993]
A.	\[F{{e}_{2}}{{O}_{3}}\]
B.	FeO
C.	\[F{{e}_{3}}{{O}_{4}}\]
D.	\[Fe{{(N{{O}_{3}})}_{3}}\]
Answer» D. \[Fe{{(N{{O}_{3}})}_{3}}\]

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Pure conc. \[HN{{O}_{3}}\]makes iron passive as the surface is covered with protective layer of [Orrisa JEE 2002; EAMCET 1993]

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