JAMB - Chemistry (2021 - No. 9)
Which of the following are chemical changes?
I. cooking of food
II. digestion of food
III. freezing of water
IV. water is heated up
I and II
I, II, and III
III and IV
all of the above
বিজ্ঞাপন
Which of the following are chemical changes?
I. cooking of food
II. digestion of food
III. freezing of water
IV. water is heated up