Q2. Which of the following changecannot be reversed?
O Freezing of ice cream
O Hardening of cement
O Opening a door
O Melting of chocolate
Answers
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0
Answer:
hardening of cement is answer
Answered by
0
Answer:
Hardening of cement
Explanation:
Why is it the answer?
Well, all the options show change, but wait...
Freezing of ice cream or opening door or melting of chocolate are just physical changes of state and can easily be reversed.
Whereas, hardening of cement is a chemical change which results in a physical change too hence cannot be reversed.
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