Question

4. Why do the colour & solution of copper sulphate change when we take a solution of
copper sulphate in a beaker and put an iron nail in it?​

Answer 1

Answer:

Because iron is more reactive than copper.

Answer 2

✏ Answer:-

✒ Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. ... Thus iron is more reactive than copper.