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Q.

Is it true that the change which has occurred in the cement because of the cement bag getting wet in the rain could be reversed?


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a

True

b

False  

answer is B.

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Detailed Solution

The above statement is false.
After getting wet in the rain, the cement in the bag will harden up. There will be a change in the chemical property of cement, and a new substance will be formed. The original cement cannot be obtained from the new substance formed as it has changed chemically. Such changes are called chemical changes and cannot be reversed. The change that occurred in cement due to getting wet cannot be reversed.
The correct statement would be that the change in the cement because the cement bag got wet in the rain cannot be reversed.
 
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