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प्रश्न
An iron ring is heated. Which of the following statement about it is incorrect?
विकल्प
The ring expands.
The ring almost comes to the same size on cooling.
The change in this case is reversed.
The ring changes its shape and the change cannot be reversed.
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उत्तर
The ring changes its shape and the change cannot be reversed.
Explanation:
The ring expands on heating and comes back to its original size on cooling. The change is reversible.
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संबंधित प्रश्न
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.
Differentiate reversible and irreversible reactions.
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
The burning of the paper is an irreversible change.
Salt can be separated from its solution (salt dissolved in water), because ______.
Rolling of chapati and baking of chapati are the changes that ______.
Can we reverse the following change? If yes, suggest the name of the method.
Curd into milk
Give one example of change which occurs on cooling but can be reversed.
Choose the odd one out. Give reason for your choice.
