In a galvanic cell, which of the following is wrong?

The correct answer is Option (3) → Reduction takes place at the anode

In a galvanic cell, oxidation occurs at the anode and reduction at the cathode. In the Daniell cell:

    \( \displaystyle \text{Anode: }\ce{Zn(s) -> Zn^2+(aq) + 2e^-} \)

    \( \displaystyle \text{Cathode: }\ce{Cu^2+(aq) + 2e^- -> Cu(s)} \)

Option (1) Anode has negative polarity — Right for a galvanic cell. Oxidation leaves electrons on the anode, so it has a negative potential.

Option (2) Cathode has positive polarity — Right for a galvanic cell. The cathode gives up electrons to the ions being reduced, so it has a positive potential.

Option (3) Reduction takes place at the anode — Wrong for a galvanic cell. The anode is where oxidation takes place; reduction takes place at the cathode.

Option (4) Reduction takes place at the cathode — Right for a galvanic cell. The copper half-cell, where \( \ce{Cu^2+} \) gains electrons, is the cathode.

NCERT (2026-27 edition):
2.2 Galvanic Cells – “… In a galvanic cell, the half-cell in which oxidation takes place is called anode and it has a negative potential with respect to the solution. The other half-cell in which reduction takes place is called cathode and it has a positive potential with respect to the solution.”