Question

Match the following:

• A. A-I, B-II, C-III, D-IV
• B. A-IV, B-III, C-II, D-I
• C. A-II, B-III, C-IV, D-I
• D. A-IV, B-II, C-III, D-I

Hint:

Periclase = MgO, widely used in basic refractory linings.

Answer 1

The Correct Option is C

Concept: Refractory materials are classified based on their major oxide composition and high-temperature stability.

Step 1: Identify compositions.

• Fireclay → $Al_2O_3 + SiO_2$
• Silica → $SiO_2$
• Periclase → MgO
• Zircon → $ZrSiO_4$

Step 2: Match correctly.
\[ A \rightarrow IV,\quad B \rightarrow III,\quad C \rightarrow II,\quad D \rightarrow I \] Final Answer: \[ \boxed{A-IV,\; B-III,\; C-II,\; D-I} \]