The presence of moisture and air causes iron to rust.
Thus, the presence of air and water vapor in the air are two necessary conditions for iron rusting.
Final Answer:
Two conditions necessary for rusting of iron are Air and Water.
The presence of moisture and air causes iron to rust.
Thus, the presence of air and water vapor in the air are two necessary conditions for iron rusting.
Final Answer:
Two conditions necessary for rusting of iron are Air and Water.