Question

An electric current is passed through a conducting solution. Following are some observations:
(i) Deposits of metal may be seen on the electrodes.
(ii) Solution may get heated.
(iii) Bubbles of gas may be formed on the electrodes.

• A. Only (ii) is true.
  
• B. Only (i) and (ii) are true.
  
• C. Only (i) and (iii) are true.
  
• D. All (i), (ii) and (iii) are true.

Answer 1

The correct option is D All (i), (ii) and (iii) are true.

When an electric current passes through a conducting liquid, it gets decomposed into ions. The conducting solution has free ions available which conduct electricity.
The possible observations are:

• Deposits of metal may be seen on electrodes.
• Bubbles of gas may be formed on the electrodes.
• The solution may get heated.
• Change in the colour of the solution may take place