1.

Assertion (A) : When iron is dipped in conc HNO_(3) , it becomes chemically inert (or) passive. (R): Iron becomes passive when treated with nitric acid is due to the formation of a layer of iron oxide Fe_(3)O_(4) on its surface.

Answer»

Both (A) and (R ) are CORRECT
Both (A) and ( R) are not correct
(A) is CORREC but(R ) is WRONG
(A) is wrong but (R ) is correct

SOLUTION :N/A


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