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(D) The principle of $Zone \ refining$ is that impurities are more soluble in the melt than in the solid state.The $Vapour \ phase \ refining$ method

Vedclass · Accepted Answer

chromatographic method

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(D) The principle of $Zone \ refining$ is that impurities are more soluble in the melt than in the solid state.The $Vapour \ phase \ refining$ method is based on converting an impure metal into a volatile compound,which is then decomposed to obtain the pure metal.The $Liquation$ method is based on the difference in melting points of the metal and the impurities,where the metal flows on a sloping surface.The $Chromatographic$ method is based on the principle that different components of a mixture are adsorbed to different extents on an adsorbent. As the mobile phase moves through the stationary phase,these components separate based on their differential adsorption. Therefore,the correct option is $D$.

The method,which is based on the principle that "different components of a mixture are differently adsorbed on an adsorbent" is called

Similar Questions

Blister copper is refined by stirring molten impure metal with green logs of wood because such wood liberates hydrocarbon gases (like $CH_4$). This process $X$ is called . . . . . . . . . and the metal contains impurities of $Y$ is . . . . . . . . .

What is annealing?

$TiI_{4}$ on heating gives

Which method of purification is represented by the equation
$Ti + 2I_2$ (Impure) $\xrightarrow{500 \ K} TiI_4$ $\xrightarrow{1675 \ K} Ti + 2I_2$ (Pure)

The reaction representing the $Mond$ process for metal refining is $............$.

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