Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for _____________ bricks?

Related Mcqs:

Silicon carbide refractories have very low ___________________?

A. Refractoriness (< 1700°C) B. Thermal conductivity C. Resistance to thermal shock D. None of these...

Which is the stable form of silica upto 1470°C ?

A. Quartz B. Cristobalite C. Tridymite D. None of these...

Test piece for determination of RUL of a refractory is heated in a/an____________________?

A. Oxidising atmosphere B. Reducing atmosphere C. Electric furnace D. Neutral atmosphere...

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...

Pick out the wrong statement ?

A. Refractories used in muffle furnace should have low thermal conductivity B. The electrical resistivity of refractories drops rapidly with rise in temperature C. For reducing spalling tendency, the refractory should be well fired and its porosity should be more D. Refractoriness under load (RUL) of a refractory is always less than its refractoriness...