Question

We can show that iron is more reactive than copper (1) by preparing copper sulphate solution and dipping iron strip in it (2) by dipping both the strips in water for some time
(3) by preparing iron sulphate solution and dipping copper strip in it
(4) by heating both iron and copper strips

Answer 1

We can show that iron is more reactive than copper (1) by preparing copper sulphate solution and dipping iron strip in it

Hence, option 1 is the correct answer

Explanation:

Since iron is a more reactive than other metal say copper, it displaces copper from the copper sulphate extract in blue and forms a green iron sulphate solution.

$CuSO_{4} (aq) Blue+ Fe(s) Grey --> FeSO_{4} (aq) Green+ Cu(s) Brown$

So we prepare a copper sulphate extract and dip it in an iron nail. These results are clearly visible.

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Answer 2

Answer:

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