Essential Chemistry for IGCSE - Air And Water (Section 4 - No. 48)
What is the purpose of coating iron or steel with a plastic layer in terms of rust prevention?
To provide sacrificial protection.
To make the iron more reactive.
To exclude oxygen and water from reaching the metal.
To improve the appearance of the metal.
Explanation
Plastic coating act as a barrier to oxygen and water.
Comments (0)
