[" magnetic separation method? "],[" 6.2What is the significance of leaching in the extraction of aluminium? "]

Explain alkali leaching in the extraction of aluminium.

Explain magnetic separation method.

(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 ?

(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 ?

Name the principal ore of aluminium. Explain 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.

What is the composition of cryolite ? Why is it used in the extraction of aluminium ?

Magnetic separation method is basically used for-