Semi-silica bricks compared to silica bricks have_______________?

Related Mcqs:

Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?

A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...

Electrical resistor bars are made of _______________?

A. Silicon carbide B. Alumina C. Zirconia D. Graphite...

Cold crushing strength of refractories depends upon its_________________?

A. Composition B. Texture C. Firing temperature D. All A., B. and C....

Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, because of its_______________?

A. Non-wetting characteristic B. High thermal conductivity C. High crushing strength D. None of these...

Refractory bricks with lower permeability is produced by using __________________?

A. Higher firing temperature B. Higher moulding pressure C. Finer grog size D. All A., B. and C....