Question

Blue coloured solution is given in the figure. Which solution is it? What causes the

colour change in this solution. Explain​

Answer 1

Answer:

The Fe displaces the Cu from CuSO

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solution in beaker A as Fe is more reactive than Cu.

Therefore the blue colour of the solution changes to green due to the formation of FeSO

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.

In beaker B, no reaction takes place as Cu being less reactive cannot displace Fe from FeSO

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Explanation:

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Answer 2

It is dilute iodine solution. The presence of starch in a raw food or solution causes color change in it.