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A bag of cement lying in the open gets wet due to rain during the night.

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asked Jan 25, 2018 in Science by Rohit Singh (61,782 points) ● 35 ● 134 ● 358

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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answered Jan 25, 2018 by sameer (82,980 points) ● 5 ● 11 ● 38
selected Jan 31, 2018 by sarthaks
 
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Due to water, cement hardens and its composition changes. Since it is a chemical change which cannot be reversed.

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