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Which of the following observations DOES...

Which of the following observations DOES NOT help in determining whether a chemical reaction has taken place?

A

1. Change in height

B

2. Change in colour

C

3. Change in state

D

4. Evolution of a gas

Text Solution

Verified by Experts

The correct Answer is:
A
A change in height is not a criteria to determine whether a chemical reaction has taken place.
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