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प्रश्न
What do you observe when :
solid ammonium chloride is heated
उत्तर
Solid ammonium chloride on heating changes into vapours (change of state) is physical change.
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संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
What do you observe when :
a spoon of sugar is heated in a pan
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Tick (√) the correct alternative from the choice given for the following statement
When sugar is heated, its colour changes into
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What role does energy play in initiating a chemical change ?
Under which different types can the following changes be classified?
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Picture based question
Observe the picture and list down the changes that are accompanied in the picture.
- ______.
- ______.
- ______.
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| 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 |
