Which of the following is the correct cooling curve for an amorphous solid?

Match the following:

List-$I$	List-$II$
$A$. $ABCABC...$ layers	$I$. $F$-centres
$B$. Thermodynamics defects	$II$. $X$-ray diffraction
$C$. $Farbenzenter$	$III$. Vacancy defects
$D$. $Debye-Scherrer$ method	$IV$. Semiconductors
	$V$. Silver

Which of the following statements is correct?

Which of the following statements is correct regarding the packing efficiency or void size?

Silver has an atomic radius of $144 \ pm$ and the density of silver is $10.6 \ g \ cm^{-3}$. Based on this information, identify the correct statement.

$A$ mixture of $KCl$ and $KF$ is added to sodium chloride.