Which metal is purified by the method of liqu | vedclass

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(C) Liquation is a metallurgical process used for the purification of metals that have a low melting point compared to their impurities. In this proce

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Tin

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(C) Liquation is a metallurgical process used for the purification of metals that have a low melting point compared to their impurities. In this process,the crude metal is placed on the sloping hearth of a furnace and heated. The metal melts and flows down the slope,leaving behind the non-fusible impurities. Tin $(Sn)$ is a classic example of a metal purified by this method because it has a relatively low melting point $(231.9 \ ^\circ C)$ compared to the impurities associated with it.

$X$	$Y$
$1$. Extraction of sulphur	$p$. Contact process
$2$. Production of nitric acid	$q$. Frasch method
$3$. Production of sulphuric acid	$r$. Haber's process
$4$. Production of ammonia gas	$s$. Ostwald's method

Which metal is purified by the method of liquation?

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$X$ $Y$

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