Question

Candles are quite calming. They give out a warm, soft light when we light them.

Which of these statements is true regarding candles?

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

Answer 1

Answer: (A), (B)

The correct options are
A

Burning of candles in an irreversible change.

B

Melting of candle wax is a reversible 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.