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Physical and Chemical Changes

In dry air, i...

Question

In dry air, iron is oxidized to give rust.

A

True

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B

False

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Solution

The correct option is B False
Iron + Moist Air $\to$ Iron (II, III) oxide

$3 F e + 2 O_{2} + X H_{2} O \to F e_{2} O_{4} . X H_{2} O$

Iron metal does not burn in dry air even on strong heating. In moist air, iron is oxidized to give rust.

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