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Question

On lightening the candle, the candle burns and gives light. Which of the following statement/(s) about it is incorrect?

A
Burning of a candle is an irreversible change.
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B
Melting of the candle wax is a reversible change.
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C
Burning of a candle is a reversible change.
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D
Melting of the candle wax is an irreversible change.
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Solution

The correct options are
C Burning of a candle is a reversible change.
D Melting of the candle wax is an irreversible change.
Burning of a candle in an irreversible change because we cannot get back the burnt wick of the candle whereas melting of the candle wax is a reversible change as we can solidify the melted wax.

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