The commonest feature of reactions at the anode is that
Answer Details
The anode is the electrode where oxidation takes place during a chemical reaction. Oxidation involves the loss of electrons by a substance. Therefore, the commonest feature of reactions at the anode is that oxidation is involved. The substance being oxidized loses electrons and becomes positively charged, while the electrons are transferred to the cathode, where reduction takes place. So, the correct answer is oxidation is involved.