When Zn piece is kept in ${\rm{CuS}}{{\rm{O}}_4}$ solution, copper gets precipitated because:

Standard reduction potential of zinc is more than copper

Atomic number of zinc is larger than copper

Atomic number of zinc is lower than copper

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NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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When Zn piece is kept in

\mathrm{CuS}{\mathrm{O}_4}

solution, copper gets precipitated because:

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Correct option: B

Standard reduction potential of zinc is less than copper

Option B is correct. Copper precipitates because zinc has a lower standard reduction potential than copper, meaning zinc is more easily oxidized and can displace copper from the solution.

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