Question

Which of the following is a reversible change?

• A. Milk turning sour
• B. Burning of wax in a candle
• C. Melting of wax
• D. Cooking a vegetable

Answer 1

The correct option is C

Melting of wax

1. A reversible change is a chemical change where no new materials are created and the original material can be recovered.
2. Here melting of wax is only a reversible change.
3. All others are chemical changes. which cannot be reversed and is permanent.
4. Hence the correct option is (c) melting of wax