Q. which of the following are chemical changes?A) Cooking of FoodB) Digestion of FoodC) Freezing of waterD) Water is heated up
A) A, B & C
B) A & B
C) All the above
D) C & D
✔ Correct Answer: A & B
Exam Insight
A and B (Cooking of food and Digestion of food) are chemical changes as they involve chemical reactions. C and D (Freezing of water and Heating water) are physical changes.