Q. 234.0( 4 Votes )

Iron filings were

Answer :

• Iron is more reactive than copper.

• So, when iron fillings are added to copper sulphate solution, iron displaces copper from copper sulphate and takes the place of copper forming ferrous sulphate.

• Hence, the displacement reaction takes place.

• The formation of ferrous sulphate leads to the change in colour.

• The blue colour of solution changes to pale green colour.

• The layer becomes brown in colour.

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