Question 10 of 15beginner🧠 RememberVery Short2 marks

State two ways to prevent the rusting of iron.

Correct Answer

Two ways to prevent the rusting of iron are:

  1. Galvanisation: Coating iron or steel articles with a thin layer of zinc prevents rusting. The galvanised article remains protected even if the zinc coating is broken because zinc is more reactive and corrodes preferentially.

  2. Painting or applying oil/grease: Applying paint, oil, or grease on iron surfaces creates a protective barrier that prevents contact with moist air and water, thus preventing rust formation.

Exercise: EXERCISES | Q: 10 | (Page Page 21)
For More Understanding

Explanation

The chapter states in Section 3.5.1 that the rusting of iron can be prevented by painting, oiling, greasing, galvanising, chrome plating, anodising or making alloys. Galvanisation is specifically explained as a method of protecting steel and iron from rusting by coating them with a thin layer of zinc.

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