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प्रश्न
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
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उत्तर
Examples of irreversible changes.
- Milk into curd
- Burning of wood
- Ripening of fruits
- Digestion of food
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संबंधित प्रश्न
What is reversible change?
Burning of match stick is a reversible change.
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Analogy
Dissolution of glucose : reversible change :: Digestion of food: ___________ change
A drawing sheet changes when you draw a picture on it. Can you reverse this change?
Most of the physical changes are ______.
Which of the following change cannot be reversed?
Salt can be separated from its solution (salt dissolved in water), because ______.
Paheli mixed flour and water and
- made a dough,
- rolled the dough to make a chapati,
- baked the chapati on a pan,
- dried the chapati and ground it in a grinder to make powder.
Identify the changes (i) to (iv) as the changes that can be reversed or that cannot be reversed.
Choose the odd one out. Give reason for your choice.
