Question

Which of the following is not chemical reaction 1 dissolution sugar in water
2.rusting of iron
3.digestion of food
4.souring of milk

Answer 1

1] dissolution of sugar in water is not a chemical reaction

Answer 2

The dissolution of sugar in water is not a chemical reaction.

• The reaction where new products form and change in internal property occurs is called a chemical reaction.
• In dissolution of sugar in water if we heat the solution we can get back the constituent so, it is a physical reaction.
• Rusting of iron is a chemical change because here iron and air react to form ferric oxide.
• Digestion of food is a chemical reaction because we can not get back the food.
• The Souring of milk is a chemical reaction because here the milk converts to curd.
• Hence the correct option is 1.