In the extraction of aluminium from bauxite the first step is the dressing of the ore by Baeyer's process. Give balanced equations for the conversion of impure bauxite to pure alumina using a concentrated solution of `NaOH`.

Extraction of aluminium from bauxite ore, reduction is carried out by :

In extraction of aluminium from bauxite ore, reduction is carried out by :

How is pure alumina prepared from bauxite in Baeyer's process? Give the equations of each step.

Name the process by which impure ore of aluminium gets purified by using concentrated solution of an alkali.

(i) Name the most common ore of the metal aluminum from which the metal is extracted. Write the chemical formula of the ore. (ii) Name the process by which impure ore of aluminum gets purified by using concentrated solution of an alkali. (iii) Write the equation for the formation of aluminum at the cathode during the electrolysis of alumina.

Give balanced equations for the following. "Extraction of silver from silver glance by cyanide process".

Write three balanced equations for purification of bauxite by Hall's process in extraction of Al.

Give a balanced equation for the following conversions: [In one or two steps] Calcium bicarbonate to calcium nitrate using a dilute acid.

(i)Name the solution used to react with Bauxite as a first step in obtaining pure aluminium oxide, in the Baeyer's process. (ii) Write the equation for the reaction where the aluminum oxide for the electrolytic extraction of aluminum is obtained by heating aluminium hydroxide.

the process which is not used for concentration of bauxite ore is