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Question
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.
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Solution
- Making of dough from flour and water is an irreversible change.
- Rolling the dough to make a chapati is reversible change.
- Baking the rolled chapati on a pan is an irreversible change.
- Grinding of dried chapati in a grinder is an irreversible change.
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