Question

Melting of wax is a/an _________ change, while burning of a candle wick is a/an _________ change.

• A. irreversible, reversible
• B. reversible, irreversible
• C. reversible, reversible
• D. irreversible, irreversible

Answer 1

The correct option is B reversible, irreversible

When we burn a candle the melted wax can be solidified. However, the wick of the candle once burnt cannot be regained or reproduced. Hence, the burning of a candle is an irreversible change as we can use the molten wax to make the candle again (after solidifying). However, we will require a new wick.