Match the element/compound given in List-$I$ with the uses given in List-$II$:

List-$I$ (Element/Compound)	List-$II$ (Use)
$A$. Lanthanoid oxide	$1$. Production of iron alloys
$B$. Lanthanoid	$2$. Television screens
$C$. Mischmetal	$3$. Petroleum cracking
$D$. Magnesium based alloy	$4$. Lanthanoid metal $+$ iron
$E$. Mixed lanthanoid oxides	$5$. Bullet tips
	$6$. $X$-ray screens

(A-2, B-1, C-4, D-5, E-3) The correct matches are as follows:
$A \rightarrow 2$ (Lanthanoid oxides are used in television screens).
$B \rightarrow 1$ (Lanthanoids are used in the production of iron alloys).
$C \rightarrow 4$ (Mischmetal consists of a lanthanoid metal and iron).
$D \rightarrow 5$ (Magnesium-based alloys containing lanthanoids are used for bullet tips).
$E \rightarrow 3$ (Mixed lanthanoid oxides are used as catalysts in petroleum cracking).
Therefore,the correct sequence is: $A-2, B-1, C-4, D-5, E-3$.