Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a

1. physical change that can be reversed
2. chemical change that can be reversed
3. physical change that cannot be reversed
4. chemical change that cannot be reversed.

Correct answer: (a) physical change that can be reversed

Explanation:  The mixing of sugar in water is a physical change and crystals of sugar can be separated from a supersaturated solution hence it is a reversible change.