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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
Short Answer Type Question:
What is a physical change? Explain with example.
What is reversible change?
Magnet attracts iron needle.This is ______ change.
Choose the odd one out. Give reason for your choice.
Periodical removal of one of the products of a reversible reaction increases the yield.
Water changes into ice on cooling is an example of ______.
Most of the physical changes are ______.
What are reversible changes?
Give one example of change occurs on mixing two substances, but can be reversed.
Find the odd one out. Give reason for your choice.
