When a piece of lead $(Pb)$ is left in blue coloured copper sulphate solution $({CuSO}_{4})$ , the colour of lead changes due to copper deposition. What type of reaction is this?

Displacement reaction

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Combination reaction

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Neutralization reaction

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Decomposition reaction

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Solution

The correct option is A Displacement reaction
Lead ( $Pb$ ) is more reactive than copper ( $Cu$ ), so it displaces copper from copper sulphate solution $({CuSO}_{4}$ ).

The displaced copper deposits on the lead piece so we see change in the colour of lead. The reaction occurs as follows:

$Pb (s) + {CuSO}_{4} (aq) \to {PbSO}_{4} (aq) + Cu(s)$
This type of chemical reaction in which a more reactive element displaces a less reactive element from its compound or salt solution is called a displacement reaction.

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Q. When a piece of lead

(Pb)

is left in blue coloured copper sulphate solution

({CuSO}_{4})

, the colour of lead changes due to copper deposition. What type of reaction is this?

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When a piece of lead (Pb) is left in blue coloured copper sulphate solution (CuSO4), the colour of lead changes due to copper deposition. What type of reaction is this?

When a piece of lead $(Pb)$ is left in blue coloured copper sulphate solution $({CuSO}_{4})$ , the colour of lead changes due to copper deposition. What type of reaction is this?