Question

Blue coloured solution is given in the figure. Which solution is it? What causes the (03) colour change in this solution. Explain.


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Answer 1

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1 Sunlight Carbon dioxide + Water ⇒ Carbo hydrate + Oxygen+ Chlorophyll

2. Acid + Base ⇒ Salt + Water

Answer 2

Blue coloured solution is Copper Sulphate.

When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

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