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  • Paheli mixed flour and water and (i) made a dough, (ii) rolled the dough to make a chapati, (iii) baked the chapati on a pan,

Paheli mixed flour and water and (i) made a dough, (ii) rolled the dough to make a chapati, (iii) baked the chapati on a pan, (iv) 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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(i) Making of dough from flour and water is an irreversible change.

(ii) Rolling the dough to make a chapati is a reversible change.

(iii) Baking the rolled chapati on a pan is an irreversible change.

(iv) Grinding of dried chapati in a grinder is an irreversible change.

Posted by

Sumit Saini

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