CTET 2 Math and Science Jan 2021 Paper

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Question : 85 of 150

Marks: +1, -0

Which of the following sets comprises chemical changes?

Cooking of food, boiling of water, dissolving sugar in water.
Rusting of iron, burning of paper, digestion of food.
Boiling or water, breaking of glass, rusting of iron
Dissolving salt in water, digestion of food, shredding of paper.

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