Iron filings were added to a solution of copper sulphate. After 10 minutes, it was observed that the blue colour of the solution changes and a layer gets deposited on iron filings. The colour of the solution and that of the coating would, respectively, be -

Yellow and green

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Brown and blue

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Red and greenish-blue

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Green and reddish-brown

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Solution

The correct option is D Green and reddish-brown
$F e + C u S O_{4} \to F e S O_{4} + C u$
Green Reddish brown
Solution becomes green and reddish brown coating of copper is formed.

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Similar questions

Give reasons for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.

Student	Aluminium sulphate solution (I)	Copper sulphate solution (II)
A	Colourless changes to light green	Blue colour of the solution is retained
B	Colour of colourless solution does not change	Blue colour of the solution changes to light green
C	Colourless solution changes to light blue	Blue colour of the solution changes to colourless
D	Colour of colourless solution remains unchanged	Blue colour of the solution fades away

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