(A) This method is based on the principle that the impurities are more soluble in the melt than in the solid state of the metal. $A$ circular mobile h

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Greater solubility of the impurity in the molten state than in the solid

(A) This method is based on the principle that the impurities are more soluble in the melt than in the solid state of the metal. $A$ circular mobile heater is fixed at one end of a rod of the impure metal. The molten zone moves along with the heater which is moved forward. As the heater moves forward,the pure metal crystallises out of the melt and the impurities pass on into the adjacent molten zone.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Refining of crude Metal

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The method of zone refining of metals is based on the principle of

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A
Greater solubility of the impurity in the molten state than in the solid
B
Greater mobility of the pure metal than that of the impurity
C
Higher melting point of the impurity than that of the pure metal
D
Greater noble character of the solid metal than that of the impurity

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Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Refining of crude Metal

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AIPMT 2003 Paper All AIPMT years →

$Si$ and $Ge$ used for semiconductors are required to be of high purity and hence purified by:

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Which process of purification is represented by the following scheme?
$\text{Ti}_{\text{impure}} + 2I_2$ $\xrightarrow{250^{\circ}C} TiI_4$ $\xrightarrow{1400^{\circ}C} \text{Ti}_{\text{pure}} + 2I_2$

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Explain the zone refining process or explain refining by fractional crystallization.

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In vapour phase refining,metal $A$ is purified by Van Arkel method and metal $B$ is purified by Mond's process. $A$ and $B$ are respectively:

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The element that can be refined by distillation is:

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The method of zone refining of metals is based on the principle of

Similar Questions

$Si$ and $Ge$ used for semiconductors are required to be of high purity and hence purified by:

Which process of purification is represented by the following scheme?$\text{Ti}_{\text{impure}} + 2I_2$ $\xrightarrow{250^{\circ}C} TiI_4$ $\xrightarrow{1400^{\circ}C} \text{Ti}_{\text{pure}} + 2I_2$

Explain the zone refining process or explain refining by fractional crystallization.

In vapour phase refining,metal $A$ is purified by Van Arkel method and metal $B$ is purified by Mond's process. $A$ and $B$ are respectively:

The element that can be refined by distillation is:

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Which process of purification is represented by the following scheme?
$\text{Ti}_{\text{impure}} + 2I_2$ $\xrightarrow{250^{\circ}C} TiI_4$ $\xrightarrow{1400^{\circ}C} \text{Ti}_{\text{pure}} + 2I_2$