Question

Which of the following is a Reversible change and why: a) A burning candle, b) An extinguished candle , and c) melted wax.​

Answer 1

Answer:

(c) Melting wax shows a reversible change. This is because it is a physical process, where only the physical state of wax changes from solid to liquid, and can be reversed back on cooling. A burning candle(a) and (b) an extinguished candle show irreversible changes.

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