Which ofthe following methods is suitable for preventing an iron frying panfrom rusting?
(a) Applyinggrease
(b) Applyingpaint
(c) Applyinga coating of zinc
(d) all ofthe above.

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Solution

(c) Applyinga coating of zinc
(Wecan also apply grease and paint to prevent iron from rusting.However, in case of iron frying pan, grease and paint cannot beapplied because when the pan will be heated and washed again andagain, the coating of grease and paint would get destroyed.)

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Question 5

(a) Which of the following methods is not used in preventing iron from rusting?

1. Applying a coating of zinc

2. Applying a coating of lead

3. Applying paint

4. Applying grease

(b) Planting more trees in and around the industrial regions ensures good quality air. True or False?

The process of applying a protective coating of zinc on iron or steel to prevent them from rusting is called ___.

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