Carbon refractories have very high __________________?

Related Mcqs:

Zirconia refractory_________________?

A. Does not react with basic slags B. Is produced from baddeleyite C. Cannot be used as an insulator D. Has poor electrical conductivity at high temperature...

Semi-silica bricks compared to silica bricks have_______________?

A. Less fusion point B. Better spalling resistance C. Both A. and B. D. Neither A. not B....

With increase in the porosity, thermal spalling resistance of fireclay brick___________________?

A. Increases B. Decreases C. Remain same D. May increase or decrease...

Spalling resistance of a refractory cannot be increased by ____________________?

A. Increasing its porosity B. Using a coarser grog during its manufacture C. Decreasing its thermal co-efficient of expansion D. Making it denser...

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...