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प्रश्न
Give one example of change which occurs on cooling but can be reversed.
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उत्तर
Formation of ice from water is reversible.
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संबंधित प्रश्न
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Change is the ______ of a substance from one form to another.
Most of the physical changes are ______.
Water on ______ changes to ice and on ______ comes back to water.
Rusting of iron is a reversible change.
The blackening of the Silver anklet is a (an) ______.
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?
Give one example of change occurs on mixing two substances, but can be reversed.
Paheli mixed flour and water and
- made a dough,
- rolled the dough to make a chapati,
- baked the chapati on a pan,
- dried the chapati and ground it in a grinder to make powder.
Identify the changes (i) to (iv) as the changes that can be reversed or that cannot be reversed.
Choose the odd one out. Give reason for your choice.
