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Question
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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Solution
Yes. The length of the dress can again be increased by unfolding it. Hence, this change can be reversed.
RELATED QUESTIONS
Very Short Answer Type Question:
Give two examples of irreversible changes.
Short Answer Type Question:
What is a chemical change? Explain with example.
A stretched rubber band comes back to normal shape. It is an example for ________.
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.
What is reversible change?
Changes which cannot be reversed are called ______.
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
Salt can be separated from its solution (salt dissolved in water), because ______.
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.
