Q3. WHICH OF THE FOLLOWING OBSERVATION HELPS US TO DETERMINE THAT
A CHEMICAL CHANGE HAS TAKEN PLACE? *
1.CHANGE IN TEMPERATURE
2. CHANGE IN COLOUR
3.EVOLUTION OF A GAS
4.ALL OF THESE
Answers
Answered by
3
Answer is 4. All of these.
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5
the option is (d) all of these
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