What is the difference between the following changes:
(i) Rolling of chapati from dough and (ii) Baking of chapati.

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Solution

Rolling of chapati from dough Baking of chapati
1. This is a reversible process. 1. This is an irreversible process.
2. We can convert rolled chapati to dough any number of times. 2. We cannot convert baked chapati to dough again.
3. No new material is formed during rolling of chapati from dough. 3. New material is formed on baking of chapati.
4. No chemical change is occurring and only the shape of changes after rolling of chapati.
4. The chemical change occurs as the chapati is subjected to direct heat cooking the dough.

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Rolling of chapati from dough	Baking of chapati
1. This is a reversible process.	1. This is an irreversible process.
2. We can convert rolled chapati to dough any number of times.	2. We cannot convert baked chapati to dough again.
3. No new material is formed during rolling of chapati from dough.	3. New material is formed on baking of chapati.
4. No chemical change is occurring and only the shape of changes after rolling of chapati.	4. The chemical change occurs as the chapati is subjected to direct heat cooking the dough.