Q25 / 160 · AP EAMCET 2019 (20 Apr Shift 2) · Chemistry

Which one of the following statements is not correct?

A
van-Arkel is method is used for refining of zinconium
B
Mond process is used for refining of nickel
C
Zone refining is based on the principle that the impurities are more soluble in the melt than in the solid state of the metal
Correct answer
D
High melting metal are refined by liquation

Solution

Liquation method is used for refining of such impure metals that are readily fusible (having low melting points) such as $\mathrm{Pb}, \mathrm{Sn}, \mathrm{Bi}$ and $\mathrm{Hg}$ as compared to impurities (less fusible). The other queen statements are correct. Hence, option (d) is incorrect.

Hence, the correct answer is option: 'D'.

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