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Q.

Is it true that a potato remains a potato even after it is cooked and, therefore, cooking is a physical change?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is false.
Cooking brings about chemical changes in food, and once a potato is cooked, it no longer resembles a raw potato. As a result, the reaction is irreversible; even after cooling, the potato cannot be restored to its earlier raw state. Since the food's composition changes while cooking, there is a chemical change.
The corrected statement would be that, “Cooking is a chemical change”.
 
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