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  • A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

7. A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

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Once cement mixes with water they both react together and the substance formed hardens and this change cannot be reversed.

Posted by

Divya Prakash Singh

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