You are provided with three iron nails, each dipped in oil, water and vinegar. Which iron nail will not rust, and why? Class 7

You are provided with three iron nails, each dipped in oil, water and vinegar. Which iron nail will not rust, and why? Class 7

You are provided with three iron nails, each dipped in oil, water and vinegar. Which iron nail will not rust, and why? Class 7

Answer:

Rusting occurs when the iron comes in contact of water (moisture) or air. Iron nail react with vinegar due to acidic nature of vinegar, will rust. The iron nail dipped in oil will not rust because the oil prevents the iron nail from coming into contact with air or moisture. It forms a protective layer on the metal, which prevents rusting.