Chemistry · Physical and Chemical Changes
Which of the following sets comprises only chemical changes?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Rusting of iron, burning of paper, cooking of food✓
- 2Breaking of an egg, boiling salt water, mixing ink in water
- 3Dissolving copper sulphate in water, digestion of food, cutting of paper
- 4Boiling of oil, breaking of a mug, burning of paper
Correct answer
Rusting of iron, burning of paper, cooking of food
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