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Q.

Is it true that Burning of wax is an irreversible change?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
Chemical change is said to occur when a new substance is formed. Chemical changes are irreversible in nature. Change in the size, form, state of a matter is called physical change. The wax acts as a fuel and flame is produced by burning of wax which evolves carbon dioxide, that is a chemical change. Therefore, burning of wax is an irreversible change.
  
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