Choose the Best Answer · Q5
Q.Which of the metal is extracted by Hall-Heroult process?
a) Al
b) Ni
c) Cu
d) Zn
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Start your 14-day free trial to unlock the full solution →Step 1. Section 1.5.1 names the Hall-Heroult process explicitly as the electrochemical extraction method for aluminium: alumina dissolved in molten cryolite is electrolysed in a carbon-lined cell.
Step 2. Ni, Cu and Zn (b, c, d) are extracted/refined by other routes described elsewhere in the unit -- nickel by the Mond vapour-phase process (refining) or carbon/hydrogen reduction (extraction), copper by smelting via the matte/conv …
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