In an activity to check the conduction of electricity through two liquids labelled A and B by using a bulb, it is observed that the bulb glows brightly for liquid A while it glows very dimly for liquid B.

A strip of impure copper metal is given to you. Describe briefly how you will purify it by using the chemical effect of electric current. Draw a labelled diagram of the experimental set up used for this purpose.

With the help of a labelled diagram, describe briefly how an iron key can be electroplated with copper.

Which of the following does not conduct electricity?

Which of the following metals should be electroplated on a tiffin box made of steel?