Question

making a dough is a reversible change while making a chapati is an irreversible change.why?

Answer 1

Because when you make a dough you just change it's shape not it's chemical structure so it is an reversible change. Though you make a chapati you bake it to change it's chemical structure thus you can't change chapati back into dough and it is irreversible change.

Answer 2

Making a dough is a reversible change while making a chapati is an irreversible change

Explanation:

• Mixing flour and water would be a physical change, since neither the water nor the flour are changing their chemical makeup. The water is still water, and the flour is still flour, and if you were to evaporate or remove the water after mixing, you would still have the original flour.
• Making of dough is a reversible change. Roti is made by rolling ball of dough into a circular shape. This rolled roti can be easily converted back to the ball of dough i.e. it is a change which can be reversed hence, it is a reversible change.
• Baking a roti is an irreversible change. Baked roti cannot be changed back into the original ball of dough i.e. this change can't be reversed. Hence, it is an irreversible change.

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