Chemically, mullite refractories is____________________?

Related Mcqs:

Conversion of silica mineral to Cristobalite is accompanied by reduction in its ____________________?

A. Volume B. Specific gravity C. Both A. & B. D. Neither A. nor B....

Insulating refractories should have_______________?

A. High porosity B. Low thermal conductivity C. Both A. and B. D. Neither A. not B....

Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?

A. Washing action of metal B. Corrosion by layer of slag C. Both A. & B. D. Neither A. nor B....

Pyrometric cone equivalent (PCE) of a refractory is the measure of its_________________?

A. Spalling resistance B. Fusion point C. Resistance to slag penetration D. Resistance to carbon monoxide attack...

Porosity of fireclay refractories is _______________ percent?

A. 5-10 B. 10-25 C. 25-35 D. 35-50...