18. A piece of iron is heated until it becomes red-hot. It then becomes soft and is beaten to a desired shape. What kinds of changes are observed in this process– reversible or irreversible? Give statement to support your answer?
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Answer:
the shape will change
Explanation:
i hope it helps
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I think it's really it's a reversible cause
Explanation:
FB if we heat a iron piece and give a shape to it
we can also heat again and give a shape to it
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