which of the following is most effective to prevent rusting of an object?
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Explanation:
(a) The rusting of iron can be prevented by painting, oiling, greasing or varnishing its surface. (b) Galvanisation is another method of protecting iron from rusting by coating it with a thin layer of zinc.
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Explanation:
Galvanizing applies a protective coating of zinc over iron or steel. Since zinc corrodes about 30 times slower than iron, galvanizing can be a cheap and effective way to prevent rust
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