Identify the principle behind the concentration of bauxite ore:

magnetic property of impurities in white bauxite

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low specific gravity of

A l_{2} O_{3}

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amphoteric nature of

A l_{2} O_{3}

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high melting point of

A l_{2} O_{3}

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Solution

The correct option is B amphoteric nature of $A l_{2} O_{3}$
An amphoteric compound is a compound that can react both as an acid as well as a base. For example, $A l_{2} O_{3}$ .
Hence, this principle is behind the concentration of bauxite ore. In this process $A l_{2} O_{3}$ first acts as an acid then as a base.

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Identify the principle behind the concentration of bauxite ore:

The correct option is B amphoteric nature of Al2O3An amphoteric compound is a compound that can react both as an acid as well as a base. For example, Al2O3. Hence, this principle is behind the concentration of bauxite ore. In this process Al2O3 first acts as an acid then as a base.