Tamilnadu BoardEnglish MediumSTD 8ScienceChanges Around Us.1 Mark
Question
What happens when an iron nail is placed in copper sulphate solution?
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Answer
When iron nail is dipped in the solution of copper sulphate, copper is displaced by iron and forms ferrous sulphate. Thus, the blue colour of copper sulphate changes into green because of formation of ferrous sulphate.
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