6. Formation of rust on iron nail is a ________ change.

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Solution

Formation of rust on iron nail is a chemical change.
When a substance combines with another to form a new substance along with the change in their chemical properties is called a chemical change.
Rusting of iron occurs when iron reacts with oxygen and moisture present in air to form a new reddish brown substance called iron oxide.
Therefore, formation of rust on iron nail is a chemical change.

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Similar questions

Q. Rusting of iron nail is
(a) reversible change
(b) irreversible change
(c) periodic change
(d) non-periodic change

Rusting of iron is a chemical change and chemical change is a permanant changes occur but we can remove the rust of iron by coating or painting than how it is a chemical change not a physical change?

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