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प्रश्न
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
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उत्तर
Yes. The length of the dress can again be increased by unfolding it. Hence, this change can be reversed.
संबंधित प्रश्न
Very Short Answer Type Question:
Give two examples of irreversible changes.
Long Answer Type Question:
How does curd being set? Is this change reversible?
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Water changes into ice on cooling is an example of ______.
Dissolving sugar in water is a ______ change.
Rusting of iron is a reversible change.
When ‘Touch me not’ plant is touched by us, ______ changes occur.
Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?
Tearing of paper is said to be a change that cannot be reversed. What about paper recycling?
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.
