Question

Select the correct word from the words in bracket to complete the sentence:

1. The electrode at which anions donate excess electrons and are oxidized to neutral atoms is the…………….. (anode / cathode).

2. On electrolysis, Ag1+ and H1+ ions migrate to the…………..(cathode / anode) and………… (Ag1+ / H+ ) are discharged.

3. Electrolysis is a / an………. (oxidation / reduction / redox) reaction in which reduction reaction takes place at the……………. (cathode / anode)

4. According to Arrhenius’* theory the amount of electricity conducted by the electrolyte depends on the ………………… (nature / concentration) of the ions in solution.

5. Salts ionize in aq. soln. on passage of electric current to give……….. (negative / positive) ions other than H+ ions.

Answer 1

1. Anode

2. Cathode ; AgI+

3. redox, cathode

4. Concentration

5. positive