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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?
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.
Long Answer Type Question:
How does curd being set? Is this change reversible?
What is reversible change?
Drying of wet clothes in air is an example of
Analogy
Dissolution of glucose : reversible change :: Digestion of food: ___________ change
Choose the odd one out. Give reason for your choice.
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.
Circle the odd one out. Give reason for your choice.
Choose the odd one out. Give reason for your choice.
