Question

Assertion -when iron is exposed to air and moisture rust is formed

Answer 1

1. Question⇒ Assertion -when iron is exposed to air and moisture rust is formed.

Explanation:

• Iron objects, kept in moist air for a long period of time, react with moist air to form a reddish brown crumbling substance called rust (hydrated iron (III) oxide, Fe2O3. X H2O, where X is the number of moles of water that differs). This corrosion of iron metal by reacting with moist air is called the rusting of iron.