Which metal is coated on iron during galvanisation to protect it from rusting?
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Answer and explanation
Correct answer: Zinc
In galvanisation, iron or steel is coated with zinc. The zinc layer prevents air and moisture from reaching the iron; moreover, because zinc is more reactive than iron, it can oxidise first even if the coating is scratched. Copper is not the metal used for galvanisation.
Frequently asked questions
What is the correct answer to this question?
Zinc
Why is this the correct answer?
In galvanisation, iron or steel is coated with zinc. The zinc layer prevents air and moisture from reaching the iron; moreover, because zinc is more reactive than iron, it can oxidise first even if the coating is scratched. Copper is not the metal used for galvanisation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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