Select the steps required for the extraction of aluminium and sequence them.
(a) Froth flotation (b) Chemical separation
(c) Electrolytic reduction (d) Smelting
(e) Distillation under low pressure (f) Electrolytic refining
(g) Pulverization (h) Conversion of concentrated ore into oxide
(i) Crushing and grinding

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Solution

The correct option is C igbhcf
Following steps are followed for extraction of aluminium:
(i) Crushing and grinding
(ii) Pulverization
(iii) Chemical separation
(iv) Conversion of concentrated ore into oxide
(v) Electrolytic reduction
(vi) Electrolytic refining

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Question 62
(i) Given below are the steps for extraction of copper from its ore. Write the reaction involved.
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The correct option is C igbhcfFollowing steps are followed for extraction of aluminium:(i) Crushing and grinding(ii) Pulverization(iii) Chemical separation(iv) Conversion of concentrated ore into oxide(v) Electrolytic reduction(vi) Electrolytic refining

The correct option is C igbhcf
Following steps are followed for extraction of aluminium:
(i) Crushing and grinding
(ii) Pulverization
(iii) Chemical separation
(iv) Conversion of concentrated ore into oxide
(v) Electrolytic reduction
(vi) Electrolytic refining