Match compound/elements of List-I with their uses given in List-II

Choose the correct answer from the options given below:

(A)-(I), (B)-(III), (C)-(II), (D)-(IV)

The correct answer is Option (2) → (A)-(I), (B)-(III), (C)-(II), (D)-(IV)

(A) Magnesium based alloy is constituent of → (I) Bullets:- Magnesium is often alloyed with Lanthanoid metals (like Cerium) to produce a "magnesium-mischmetal alloy" which is used in the manufacture of bullets (tracer bullets, shells) and lighter flints due to its pyrophoric nature (sparks easily).

(B) Lanthanoid oxide → (III) Television screen:- Certain Lanthanoid oxides (and sulphides) like Europium oxides are used to create phosphors (substances that glow when exposed to radiation) for television screens (CRTs) and fluorescent lamps, providing vibrant colors (especially red).

(C) Mixed oxides of Lanthanoids are employed in → (II) Petroleum cracking:- Mixed oxides of Lanthanoids (e.g., $\text{CeO}_2$) are used as catalysts in the petroleum cracking industry. They help break down larger hydrocarbon molecules into smaller, more valuable components (like gasoline).

(D) Misch metal → (IV) Lanthanoid metal and iron:- Misch metal is a common alloy that typically consists of about $95\%$ Lanthanoid metal (primarily Cerium and Lanthanum) and about $5\%$ iron ($\text{Fe}$), along with traces of $\text{S}$, $\text{C}$, $\text{Ca}$, $\text{Al}$.