CBSE Class 7 Science
Question 10 of 13
The World of Metals and Non-metals — Question 12
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Question You are provided with three iron nails, each dipped in oil, water and vinegar. Which iron nail will not rust, and why?
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.