Baljinder Kaur Solutions for Chapter: Practice Paper-8, Exercise 8: UNSOLVED PRACTICE PAPERS FOR REVISION

Define the term alkenes.

Define the term functional group.

Aluminium is extracted from its ore by Baeyer's process followed by Hall-Heroult's process. Separation of impurities from bauxite ore is carried out by digesting the impure bauxite with a concentrated solution of an alkali. Give reason

Aluminium is extracted from its ore by Baeyer's process followed by Hall-Heroult's process. The pure alumina cannot be reduced to aluminium by using reducing agents like hydrogen, carbon or carbon monoxide.

Aluminium is extracted from its ore by Baeyer's process followed by Hall-Heroult's process.But pure alumina is not electrolysed. Give reason.

Aluminium is extracted from its ore by Baeyer's process followed by Hall-Heroult's process. The anode is periodically replaced. Give reason.

Write the ionic equations for the reactions which takes place at anode and cathode during extraction of aluminium by Hall-Heroult's process.

When copper sulphate solution is electrolysed with copper electrodes, the blue copper ions are discharged at the cathode and get deposited as copper at the cathode. Yet the blue colour of the solution does not fade. Explain.