JEE Main 202127 AugustMorning Shift

Exam: JEE Main
Year: 2021
Date: 27 August
Shift: Morning Shift
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

JEE Main 2021 · 27 August · Morning Shift · Chemistry · General Principles and Processes of Isolation of Metals

Which refining process is generally used in the purification of low...

Which refining process is generally used in the purification of low melting metals?

Options

AChromatographic method
BElectrolysis
CZone refining
DLiquation

Correct answer

D. Liquation

Step-by-step solution

Liquification of liquation: In this method a low melting metal like tin can be made to flow on a sloping surface. In this way it is separated from higher melting impurities.

This process is used for the purification of the metal in which melting point of the metal to be purified should be lower than that of each of the impurities associated with the metal. This process is used for the purification of $Sn$ and $Zn,$ and for removing $Pb$ from $Zn - Ag$ alloy.

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