Which of the following is a chemical change?
  1. Twinkling of stars
  2. Cooking of vegetables
  3. Cutting of fruits
  4. Boiling of water

AcademicChemistryNCERTClass 7

Correct answer: (b) Cooking of vegetables

Explanation: Cooking of vegetables is a chemical change as raw vegetables have different properties than cooked ones.

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