The acidic refractory material is :

C a O

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P_{2} O_{5}

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S i O_{2}

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M g O

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Solution

The correct option is B $S i O_{2}$
Acidic refractories consist of mostly acidic materials like alumina ( $A l_{2} O_{3}$ ) and silica ( $S i O_{2}$ ). They are generally not attacked or affected by acidic materials, but easily affected by basic materials.

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Similar questions

M g O

S i O_{2} + C a O \to C a S i O_{3}

F e O + S i O_{2} \to F e S i O_{3}

C a O + P_{2} O_{5} \to C a_{3} (P O_{4})_{2}

C r_{2} O_{3} + 2 A l \to A l_{2} O_{3} + 2 C r

M g C O_{3} + S i O_{2} \to M g S i O_{3} + C O_{2}

P_{2} O_{5}

C a O

M g O

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