State the observation which shows that chemical reaction has taken place
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there are many observations some are give
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The observations are:
- Change in state.
- Change in colour.
- Evolution of a gas.
- Change in temprature.
- Formation of precipitate.
Explanation:
Hope it helps you.. These are the main points as I am a CBSE student I am confirmed about this answer becs last yr only I gave 10th boards.
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