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प्रश्न
Under which different types can the following changes be classified?
Occurrence of an earthquake.
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उत्तर
Natural change
संबंधित प्रश्न
Fill in the blank
Burning of fuel is a _______ change.
True or false?
During a physical change energy is either given out or absorbed by the system.
Fill in the blank
An earthquake is a _______ change.
Chemical changes are accompanied by changes in energy.
Under which different types can the following changes be classified?
Conversion of milk into yoghurt.
Explain in brief the involvement of energy in physical and chemical changes.
Fill in the blanks with the appropriate words of the statement given below:
Chemical changes may involve exchange of energy in the form of __________ and _________.
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 |
The difference between initial state and the final state is called change.
What is the change?
