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प्रश्न
Under which different types can the following changes be classified?
Conversion of milk into yoghurt.
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उत्तर
The conversion of milk into yoghurt can be classified under the following types of changes:
- Chemical Change → A new substance (yoghurt) is formed from milk, and the change cannot be reversed easily.
- Irreversible Change → Once milk turns into yoghurt, it cannot be changed back into milk.
संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
Fill in the blank
Burning of fuel is a _______ change.
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
Tick (√) the correct alternative from the choice given for the following statement
Burning is a
True or false?
During a physical change energy is either given out or absorbed by the system.
How can a change occur in a substance?
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.
______ is the process in which something becomes different from what it was earlier.
What is the change?
