Question

13. Iron Rim is made slightly smaller than wooden wheel. The iron rim is
heated before fixing to wooden wheel because on heating the iron?
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Answer 1

Answer:

Rims are heated red before fixing them because it will slips on to the wheel. When it is cooled it contracts and grips the wheel firmly...

Explanation:

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Answer 2

Answer:

Rims are heated red before fixing them because it will slips on to the wheel.When it is cooled it contracts and grips the wheel firmly...

[Expands first, then on cooling contracts and fits on to the wooden wheel......]