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Which of the following statements is not...

Which of the following statements is not correct?

A

1.Crystallisation is a chemical change

B

2.Digestion is a chemical change

C

3.Photosynthesis is a chemical change

D

4.Respiration is a chemical change

Text Solution

Verified by Experts

The correct Answer is:
A
Chemical changes occur when a substance combines with another to form a new substance. Crystallisation is not a chemical change as no new substance is formed in this process. It is the process of deriving large crystals of pure substances from their solution.
Therefore, it is a physical process.
Thus, statement (1) is not correct, while rest are correct.
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