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The method of zone refining of metals is...

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

A

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

B

Greater solubility of pure metal than that of 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

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Zone refining is based on

    A
    fractional distillation
    B
    fractional crystallisation
    C
    chromatographic separation
    D
    destructive distillation

  • In electrolytic fefining of cooper, pure Cu os used as anode. (B) Zone refining is based on the principle that impurities are more solutble in the melt than in the solid states of the metal. (D) Very pure Zr may be obtained by Galvanisation. (E) In copper smelting hot air is used to convery Cu_(2) S to CuSO_(4).

    A
    A,B,E
    B
    B,C
    C
    B,C,D,E
    D
    B,C,D

  • Which of the following statements are correct related to metallurgy? (A) In electrolytic refining of copper, pure Cu is used as anode. (B) Zone refining is based on the principle that impurities are more soluble in the melt than in the solid state of the metal. (C) (C) TiI_4 upon heating will give pure Ti. (D) Very pure Zr may be obtained by galvanisation (E) In copper smelting, hot air is used to convert to CuSO_4 The correct answer is

    A
    (A), (B), (E)
    B
    (B), (C)
    C
    (B), (C), (D), (E)
    D
    (B), (C), (D)

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    The proces s of zone refining is used for

    The process of zone refining is used for

    Decribe a method for the refining of nickel.

    (A): High purity gallium for semiconducting purpose can be obtained by zone refining (R): Zone refining works on the principle of fractional crystallisation, leading to high purity

    (A): High purity gallium for semiconducting purpose can be obtained by zone refining (R): Zone refining works on the principle of fractional crystallisation, leading to high purity

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