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Question

When we burn a candle, which of the following change takes place?

A
Physical Change
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B
Chemical Change
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C
Reversible change
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D
None of these
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Solution

The correct options are
A Physical Change
B Chemical Change
Both Physical and Chemical changes occur.
Upon heating, the wax first undergoes the process of melting followed by burning. Here, melting is a physical change as the melted wax can again be obtained as solid wax upon the removal of heat, whereas, burning is a chemical change, as once the wax has been burnt, it cannot be obtained back in its original form.

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