Question

All the reactions that include change in colour in class 10

Answer 1

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Answer: Colour changes from blue to light green. Copper reacts with oxygen, H2O and CO2 to give copper carbonate, which changes colour from brown to blue or blue green. Rusting, blackening of surfaces of cutted vegetables and fruits are other examples of change of colour in a chemical reaction.

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Answer 2

cuso4+fe-feso4+cu

Explanation:

here fe displaces cu and the colour of cuso4 is blue byt after the colour of feso4 is pale green