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Tamil Nadu Board of Secondary EducationHSC Science Class 12

In the extraction of aluminium from alumina by electrolysis, cryolite is added to

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Question

In the extraction of aluminium from alumina by electrolysis, cryolite is added to

Options

  • Lower the melting point of alumina

  • Remove impurities from alumina

  • Decrease the electrical conductivity

  • Increase the rate of reduction

MCQ
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Solution

Lower the melting point of alumina

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Chapter 1: Metallurgy - Evaluation [Page 22]

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Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 12 TN Board
Chapter 1 Metallurgy
Evaluation | Q 13. | Page 22
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