MCQEasy1 mark

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

The compound that is not a constituent of the electrolytic mixture used in the Hall-Heroult's process is:

Topic: Metallurgy, ores, extraction and alloys

Previous-year question practice database

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Al₂O₃NaAlO₂Na₃AlF₆CaF₂

Exam answer

(b) NaAlO₂.

Explanation

The Hall-Héroult electrolyte contains Al₂O₃, Na₃AlF₆ and CaF₂.

In words

NaAlO₂.