Question

Match compound/elements of List-I with their uses given in List-II \[ \begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \hline (A) \; \text{Magnesium based alloy is constituent of} & (I) \; \text{Bullets} \\ \hline (B) \; \text{Lanthanoid oxide} & (II) \; \text{Petroleum cracking} \\ \hline (C) \; \text{Mixed oxides of Lanthanoids are employed in} & (III) \; \text{Television screen} \\ \hline (D) \; \text{Misch metal} & (IV) \; \text{Lanthanoid metal and iron} \\ \hline \end{array} \]

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

Hint:

Lanthanoid oxides have applications in industries like television screens, while Misch metal is used in a variety of alloys.

Answer 1

The Correct Option is B

- (A) Magnesium based alloy is constituent of - Magnesium alloys are used in the manufacturing of bullets due to their lightweight and durability.
- (B) Lanthanoid oxide - Lanthanoid oxides are commonly used in television screens due to their phosphorescent properties.
- (C) Mixed oxides of Lanthanides are employed in - Mixed oxides of lanthanides are used in petroleum cracking to facilitate the catalytic process.
- (D) Misch metal - Misch metal, which is an alloy of lanthanoid metal and iron, is used in the production of various alloys and in iron production.
Thus, the correct matching is:
(A) - (I), (B) - (III), (C) - (II), (D) - (IV).
Final Answer: \[ \boxed{\text{The correct matching is (A) - (I), (B) - (III), (C) - (II), (D) - (IV).}} \]