The significance of leaching in the extr...

The significance of leaching in the extraction of aluminium is

It helps removing the impurities like `SiO_(2),Fe_(2)O_(3)` etc. from the bauxite ore

It converts the ore into oxide

It reduces melting point of the ore

It eliminates water from bauxite

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(a) Write the principle of method used for the refining of germanium (b) Out of PbS and PbCO_(3) (ores of lead), which one is concentrated by froth floatation process preferably ? (c) What is the significance of leaching in the extraction of aluminium ?

The signifificance of leaching in the extraction of aluminume is

What is the significance of leaching in the extraction of aluminium?

Name the principal ore of aluminium. Explain the significance of leaching in the extraction of aluminium.

Give balanced equations for the conversions – involved in the extraction of aluminium - Baeyer's process: Sodium aluminate to an insoluble hydroxide of aluminium.

Give balanced equations for the conversions – involved in the extraction of aluminium - Baeyer's process: Insoluble hydroxide of aluminium to pure alumina.

In the stages involved in the extraction of metals in general - give reasons for following Magnetic separation is not used during the dressing of bauxite ore in the extraction of aluminium.

Give balanced equations for the conversions – involved in the extraction of aluminium - Baeyer's process: Impure bauxite to a sodium salt – using an alkali.

Answer the following questions with respect to the electrolytic process in the extraction of aluminium: For the substance listed below explain the role played in the extraction of aluminium. Sodium hydroxide

Name the A compound added to lower the fusion temperature of electrolytic bath in the extraction of aluminium.

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