Which one of the following observations is INCORRECT regarding the chemical reaction between copper sulphate solution and an iron nail?

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Physics · Matter

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

The colour of the solution changes from green to blue

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Answer 1

It is a displacement reaction and a chemical change

Answer 2

Iron is more reactive than copper

Answer 3

Iron sulphate is the product formed in the solution

Answer 4

The colour of the solution changes from green to blue

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