JEE Main Chemistry question

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

Not in JEE Main or NEET syllabus

Aluminium is obtained by [WB-JEE 2007]

(A)Reducing with coke
(B)Electrolysing dissolved in Correct
(C)Reducing with chromium
(D)Heating alumina with cryolite

Answer: (B)

Solution

In the Hall–Héroult process, alumina is dissolved in molten cryolite () to lower its melting point and increase conductivity, and aluminium is obtained by electrolytic reduction of this melt. cannot be

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Question ID VK-138259