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प्रश्न
Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not.
| S. No. | Change | Can be reversed (Yes/No) |
| 1. | The sawing of a piece of wood | |
| 2. | The melting of ice candy | |
| 3. | Dissolving sugar in water | |
| 4. | The cooking of food | |
| 5. | The ripening of a mango | |
| 6. | Souring of milk |
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उत्तर
| S. No. | Change | Can be reversed (Yes/No) |
| 1. | The sawing of a piece of wood | No |
| 2. | The melting of ice candy | Yes |
| 3. | Dissolving sugar in water | Yes |
| 4. | The cooking of food | No |
| 5. | The ripening of a mango | No |
| 6. | Souring of milk | No |
संबंधित प्रश्न
What do you observe when :
a spoon of sugar is heated in a pan
Melting of solid (wax) is a physical change.
Under which different types can the following changes be classified?
Bursting of a cracker.
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
Give reason.
A dry handkerchief gets wet at once on dipping in water, but it takes longer for a wet handkerchief to dry.
Explain in brief the involvement of energy in physical and chemical changes.
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
Picture based question
Observe the picture and list down the changes that are accompanied in the picture.

- ______.
- ______.
- ______.
______ is the process in which something becomes different from what it was earlier.
Cut vegetables turn brown when exposed to air, this is due to ______.
