all positive electrodes are anodes and all negative electrodes are cathodes is it true or false

Which electrode is labeled as positive in a voltaic cell?Group of answer choicesboth anode and cathodeneither anode nor cathodeanode onlycathode only

Which of the following statements about galvanic cell is incorrect?anode is positiveoxidation occurs at the electrode with lower reduction potentialcathode is positive reduction occurs at cathode

You are experimenting on electrolytic cell at your school laboratory. Which of the following is FALSE?Select one:a.Cations are oxidized.b.Anions are oxidized.c.Cations go to the cathode.d.Anions go to the anode.

Consider the following statements about cathode rays:(a) They are negatively charged particles(b) The characteristics of cathode rays do not depend upon the material of electrodes used.(c) They start from anode and move towards cathode.The correct statements are:

Which of the following statements about ‘inert’ electrodes is not true?At the cathode, positive ions gain electrons to become metal elementsThey take part in the electrolysis reactionsThey can be made of carbonAt the anode, negative ions lose electrons and become non-metal elements2Copper can be purified by electrolysis using metal (non-inert) electrodes. Which of the following correctly describes how the electrolysis cell should be set up?Cathode should be impure copper, anode should be pure copperCathode should be carbon, anode should be impure copperCathode should be pure copper, anode should be carbonCathode should be pure copper, anode should be impure copper3What happens at the anode?Copper ions formCopper atoms formSulfate ions formImpurities from the impure copper are collected4What happens at the cathode?Impurities from the impure copper are collectedCopper ions formSulfate ions formCopper atoms form5The core practical investigates the changes in electrode mass during the electrolysis of copper sulfate solution at different currents. Which of the following would you not expect to happen?The higher the current the lower the change in mass between the anode and cathodeThe anode decreases in massThe gain in mass by the cathode is the same as the loss in mass by the anodeThe cathode increases in mass6Sometimes the mass gain at the cathode may be slightly lower than the mass loss at the anode. What is an explanation for this?Some of the propanone used in the washing process may not have evaporated properly from the anodeAll of theseSome of the copper deposited at the cathode may have fallen off during the washing processIf the anode is not pure copper, any impurities will be deposited in the electrolyte rather than at the cathode