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

Answer 1

Answer: (C), (D)

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.