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प्रश्न
A piece of iron is heated till it becomes red-hot. it then becomes soft and is beaten to a desired shape. What kind of changes are observed in this process-reversible or irreversible?
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उत्तर
A piece of iron on heating can be beaten into desired shape. It is a reversible change because the object of desired shape can be again heated and beated to give the original shape.
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संबंधित प्रश्न
Very Short Answer Type Question:
Give two examples of reversible changes.
Match the following.
| Bud to flower | Dr. A.P.J. Abdul Kalam |
| Reversible change | Recyclable waste |
| India 2020 | Organic waste |
| Paper | Melting of ice |
| Vegetables | Irreversible change |
Circle the odd one.
Differentiate reversible and irreversible reactions.
Which is reversible change?
Water changes into ice on cooling is an example of ______.
Look at the figure which shows three situations.
Which of these shows a reversible change and why?
Give one example of change which occurs on mixing two substances, but cannot be reversed.
Choose the odd one out. Give reason for your choice.
Choose the odd one out. Give reason for your choice.
