Q.

Is it true that the burning of a candle is a reversible change?


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a

True

b

False  

answer is B.

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Detailed Solution

The above statement is false.
Changes are always happening all around us. Some of these changes can be reversed and some of them cannot be reversed. An irreversible change is a change in which we cannot obtain the substance in its original form or shape. An unchangeable change occurs when a candle is burned. Once the candle is burning, the thread in between uses this wax to burn. The thread in between once burnt cannot be obtained again and the candle gets shorter in length during burning. The original candle cannot be obtained once it is burnt.
The corrected statement would be, “Burning of a candle is an irreversible change”.
 
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