Iron nails were dipped in a solution kept in a test tube. After half an hour, it was observed that the colour of the solution has changed. This change of colour is due to the formation of :

Zinc sulphate

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Copper sulphate

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Iron sulphate

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Aluminium sulphate

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Solution

The correct option is C
Iron sulphate

Since iron is more reactive than copper but less reactive than zinc and aluminium, hence it displaces copper from copper sulphate solution.
$C u S O_{4} B l u e + F e \to F e S O_{4} (G r e e n) + C u$

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Similar questions

Q. Assertion :The colour of copper sulphate solution change when an iron nail is dipped in it. Reason: When an iron nail is placed in a copper sulphate solution, iron displaces copper from copper sulphate solution forming iron sulphate.

Q. What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?

When an iron nail is placed in copper sulphate solution, we observe colour changes whereas when copper wire is placed in iron sulphate solution, we observe no change in colour. What is the reason behind this change in the test tube?

Q. Question1

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

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Iron nails were dipped in a solution kept in a test tube. After half an hour, it was observed that the colour of the solution has changed. This change of colour is due to the formation of :

The correct option is C Iron sulphate Since iron is more reactive than copper but less reactive than zinc and aluminium, hence it displaces copper from copper sulphate solution. CuSO4Blue+Fe→FeSO4(Green)+Cu

The correct option is C
Iron sulphate

Since iron is more reactive than copper but less reactive than zinc and aluminium, hence it displaces copper from copper sulphate solution.
$C u S O_{4} B l u e + F e \to F e S O_{4} (G r e e n) + C u$