Zinc is used to protect iron from corrosion because zinc is A. more e

1.	Zinc is used to protect iron from corrosion because zinc is A. more electropositive than iron B. cheaper than iron C. a bluish white metal D. a good conductor of heat and electricity
Answer» Correct option (a) more electropositive than iron Explanation: The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water reaching the metal underneath - but the zinc also acts as a sacrificial metal. Zinc is more reactive than iron, so it oxidises in preference to the iron object.

Zinc is used to protect iron from corrosion because zinc is A. more electropositive than iron B. cheaper than iron C. a bluish white metal D. a good conductor of heat and electricity

Answer»

Correct option (a) more electropositive than iron

Explanation:

The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water reaching the metal underneath - but the zinc also acts as a sacrificial metal. Zinc is more reactive than iron, so it oxidises in preference to the iron object.

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Zinc is used to protect iron from corrosion because zinc is A. more electropositive than iron B. cheaper than iron C. a bluish white metal D. a good conductor of heat and electricity

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