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.

AcademicChemistryNCERTClass 7

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.

Updated on 10-Oct-2022 13:21:31