During the manufacture of Chlorine by the electrolysis of brine, the by-products are
The colouring matter removed by animal charcoal during purification of sugar ascts as
The diagram shows the process of purification of copper metal. A thick copper plate A of impure copper and a thin copper plate B are immersed in a metal sulphate solution and an electric current is passed through it. What is liberated at the cathode? Explain.
