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प्रश्न
A drawing sheet changes when you draw a picture on it. Can you reverse this change?
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उत्तर
If we draw a picture on a drawing sheet with a pencil, we can get back the original drawing sheet by erasing the drawing with an eraser. In this case, the change can be reversed.
However, if we draw with a pen, then the original drawing sheet cannot be obtained back because we cannot erase ink. Hence, in this case, the change cannot be reversed.
संबंधित प्रश्न
Short Answer Type Question:
What is a chemical change? Explain with example.
Differentiate reversible and irreversible changes.
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Differences between
reversible and irreversible changes are:
Touch me not plant: ______:: digestion of food: Irreversible change.
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
Conversion of ice into water and water into ice is an example of change which can be reversed. Give four more examples where you can say that the changes can be reversed.
Choose the odd one out. Give a reason for your choice.
Select the odd one out. Give reason for your the choice
