Which of the following is example of chemical change?
1. Crystallisation of sodium chloride
2. Melting of rice.
3. Souring of milk.
aahna102:
souring of milk is a chemical change because in all two there is a physical change
souring of milk
crystallisation of sodium chloride is a chemical change
and souring of milk is also
Dear user!!let me clear it
crystallization is only add of water . nothing else...in simple language
it does not make any chemical change in compound
Answers
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38
Here is your answer dear⤵️⤵️
Option no. 3 Souring of milk is the example of chemical change. As the souring (sour) of milk cannot be changed into the fresh ones again. So it is a chemical change. And chemical change is the change which cannot come to its original property. Example.,, Baking a cake. So the ingredient we cannot get back.
Option no. 3 Souring of milk is the example of chemical change. As the souring (sour) of milk cannot be changed into the fresh ones again. So it is a chemical change. And chemical change is the change which cannot come to its original property. Example.,, Baking a cake. So the ingredient we cannot get back.
but what about reversible reactions?
o 3
option 3
Answered by
37
Ans is (3. Souring of milk.
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The crystallization of sodium chloride is physical change and no chemical change takes place...Melting of ice is also physical change. It changes into other physical form i.e. water...Souring of milk is a chemical change as bacteria activates the formation of lactic acid which turns milk sour.
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The crystallization of sodium chloride is physical change and no chemical change takes place...Melting of ice is also physical change. It changes into other physical form i.e. water...Souring of milk is a chemical change as bacteria activates the formation of lactic acid which turns milk sour.
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