JEE Main Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

How many of the following species are related to Hall's process of purification of bauxite?

White bauxite, , , cryolite, red bauxite

Answer: 3

Solution

Hall's process fuses red (ferruginous) bauxite with , releasing and forming soluble sodium aluminate; so red bauxite, and are all related to

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Question ID VK-145602