Respuesta :

gadaa
Presence of water and oxygen

You could coat the iron with paint to prevent water coming in contact with it.

ujalakhan18

Answer:

1) Conditions necessary for rusting are:

a) Presence of atmospheric oxygen or air

b)Presence of water or moisture

2) For protecting the iron gate, we can paint it because the paint will coat it and protect it from atmospheric oxygen and water.

3) Magnesium, Carbon and Oxygen (MgCO₃)