Biology, 05.05.2021 16:30, MadisonElle

Andy added some iron nails in a beaker containing copper sulphate solution and after sometime he observed Single choice. The blue colour of the solution turns colourless.

The green colour of the solution changes to blue.

The colourless solution changes to blue.

The blue colour of the solution changes to green.

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Andy added some iron nails in a beaker containing copper sulphate solution and after sometime he obs...