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Chapter 8: Problem 32

Select the steps required for the extraction of aluminium and sequence them. (1) froth flotation (2) chemical separation (3) electrolytic reduction (4) smelting (5) distillation under low pressure (6) electrolytic refining (7) pulverization (8) conversion of concentrated ore into oxide (9) crushing and grinding (a) 95723861 (b) 32145678 (c) 972836 (d) 972386

Short Answer

Expert verified
In conclusion, the correct sequence of steps required for the extraction of aluminium can be found in option (d): 972386. This sequence involves crushing and grinding, pulverization, conversion of concentrated ore into oxide, electrolytic reduction, and smelting.

Step by step solution

01

Identifying steps involved in the extraction of aluminium

The steps relevant to extracting aluminium are: - Pulverization (7) - Crushing and grinding (9) - Conversion of concentrated ore into oxide (8) - Electrolytic reduction (3) - Smelting (4) We will leave out the steps not specific to aluminium: - Froth flotation (1) - Chemical separation (2) - Distillation under low pressure (5) - Electrolytic refining (6)
02

Sequencing the steps for extracting aluminium

Now, let's arrange these necessary steps in the correct order: 1. Crushing and grinding (9) 2. Pulverization (7) 3. Conversion of concentrated ore into oxide (8) 4. Electrolytic reduction (3) 5. Smelting (4)
03

Match the sequence to the given options

Now, match our arrangement to the given options (a, b, c, d). Convert our sequence into numbers: 972384 Let's check each given option: (a) 95723861 - Incorrect, includes irrelevant steps (b) 32145678 - Incorrect, includes irrelevant steps and has wrong sequences (c) 972836 - Incorrect, missing steps 4 and 8 (d) 972386 - Correct, as it matches our sequence The correct sequence of steps can be found in option (d): 972386

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Most popular questions from this chapter

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