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The method of zone refining of metals is...

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

A

Greater mobility of the pure metal than that of the impurity

B

Higher melting point of the impurity than that of the pure metal

C

greater solubility of the impurity in the molten state than in the solid .

D

greater noble character of the solid metal than that of the impurity.

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The correct Answer is:
C
On heating the sample of metals by moving furnace along the length of metal rod (sample), the pure metal crystallises out in the melt while impurities remain in the welt.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 01-PAPER 1 (PHYSICS & CHEMISTRY)
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  7. But -2 -ene on ozonolysis gives

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  11. If 3A rarr 2B, then the rate of reaction of + (dB)/(d t) is equal to

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  12. Which of the following method is not used for the concentration of bau...

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  14. The decreasing order of hydration enthalpies of earth metal ions is

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  15. Which of the following has abnormally low value of third ionisation en...

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  17. The reaction 2HCO + NaOH to HCOONa + CH(3) OH is

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