Question

On lightning the candle, the candle burns and gives off light. Which of the following statement(s) about it is/are 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 is 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.