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प्रश्न
Magnet attracts iron needle.This is ______ change.
पर्याय
a reversible
an irreversible
उत्तर
Magnet attracts iron needle. This is a reversible change.
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संबंधित प्रश्न
Short Answer Type Question:
What is a chemical change? Explain with example.
Long Answer Type Question:
How does curd being set? Is this change reversible?
An example for reversible change is
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.
Water on ______ changes to ice and on ______ comes back to water.
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?
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?
Can we reverse the following change? If yes, suggest the name of the method.
Curd into milk
Choose the odd one out. Give a reason for your choice.
