‘The reddish-brown substance deposited over iron objects in the presence of moist air.

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Solution

Rusting.
Iron starts rusting when it is exposed to oxygen and moisture content present in the air.
It results in the formation of a reddish-brown flaky layer of iron oxide, which is known as rust.

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‘The reddish-brown substance deposited over iron objects in the presence of moist air.

Rusting.Iron starts rusting when it is exposed to oxygen and moisture content present in the air.It results in the formation of a reddish-brown flaky layer of iron oxide, which is known as rust.

Rusting.
Iron starts rusting when it is exposed to oxygen and moisture content present in the air.
It results in the formation of a reddish-brown flaky layer of iron oxide, which is known as rust.