Chemistry
Related Questions
State the property of the metal being utilised in the following:
Use of metal Property Zinc in galvanisation Aluminium in thermite welding The following questions are relevant to the extraction of Aluminium :
(i) State the reason for addition of caustic alkali to bauxite ore during purification of bauxite.
(ii) Give a balanced chemical equation for the above reaction.
(iii) Along with cryolite and alumina, another substance is added to the electrolyte mixture. Name the substance and give one reason for the addition.
Write the equation for the reaction where the aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide.
Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.