In which of the following cells polarisation is the major defect?

Option 1 : Voltanic cell

• Polarization is the major defect found in the voltaic cell. 
• The voltaic cell has polarization due to ongoing chemical reactions.
• The chemical action that occurs in the cell while the current is flowing causes hydrogen bubbles to form on the surface of the anode. This action is called polarization.
• Some hydrogen bubbles rise to the surface of the electrolyte and escape into the air, some remain on the surface of the anode.
• If enough bubbles remain around the anode, the bubbles form a barrier that increases internal resistance. 
• When the internal resistance of the cell increases, the output current is decreased and the voltage of the cell also decreases.
• Daniell cell is an improvement on the voltaic cell using two electrolytes and solves the problem of polarisation.