Question

Which of the following is not an example of chemical change?

a) Digestion of food in our body

b) Rusting of iron

c) Milk changes to curd

d) Changing of water to water vapour ​

Answer 1

Hii mate......



Option d changing of water to water vapour is the right option.....




Hope it helps you mate,....... ✌️✌️✌️✌️✌️✌️

Answer 2

Answer:

d) Changing of water to water vapour ​is not an example of chemical change.

Explanation:

A chemical reaction is a reaction in which two or more substances react and make two or more new substances. In the given question:

• a) Digestion of food in our body is a chemical reaction because there are acids in our stomach that react with our food. So, it is a chemical reaction.
• b) Rusting of iron is a chemical reaction beacuse in this also metal reacts with water and then it rusts. So, it is a chemical reaction.
• c) Milk changes to curd is a chemical reaction beacuse milk contains lactic acid and when it is converted to curd chemical reactions take place. So, it is a chemical reaction.
• d) Changing of water to water vapour is a not chemical reaction beacuse in this water simply changes its form and there is no chemicals or reversible change. So, it is not a chemical reaction.

Hence, The answer is

d) Changing of water to water vapour ​

#SPJ2