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Question

Which of the following changes falls in the category of chemical change?

A
Cooking of food
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B
Making ice cream
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C
Boiling water
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D
Melting iron
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Solution

The correct options are
A Cooking of food
B Making ice cream
The change due to which the one substance is transformed into another substance having new and different properties is called a chemical change.

Chemical changes produce new combinations of matter. On cooking food or making ice cream a new substance with different composition is obtained. Thus, these are chemical changes.

Properties of water and iron do not change on boiling and melting respectively. Thus, these are physical changes.

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