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प्रश्न
Give an example of the following chemical changes.
A reaction where colour change is noticed.
टिप्पणी लिखिए
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उत्तर
Colour change
A few pieces of iron are added into a blue coloured copper sulphate solution; the blue colour of copper sulphate fades and eventually turns into light green due to the formation of ferrous sulphate.
Fe + CuSO4 → FeSO4 + Cu
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