Chemistry
Grade-10
Easy
Question
Which of the following is not a chemical reaction?
- Souring of milk
- Dissolution of sugar in water
- Rusting of iron
- Digestion of food in our body
Hint:
After dissolution of sugar in water we can revert back to starting material easily.
The correct answer is: Dissolution of sugar in water
- Souring of milk involves formation of lactic acid and curding of milk.
- Dissolving sugar in water is a physical change which can be reverted back to its substituents sugar and water.
- Rusting of iron forms iron oxide film over iron which is a chemical change.
- For digestion of food in our body food particles mix with enzyme and get converted into absorbable form.
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