To resist spalling tendency, a refractory should have________________?

Related Mcqs:

Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns ?

A. 1800 B. 2200 C. 2400 D. 2700...

Thermal spalling mainly occurs during _____________ of furnaces?

A. Cooling down B. Warming up C. Both A. & B. D. Neither A. nor B....

Grog__________________?

A. Contains both alumina and silica B. Is crushed firebrick C. Is a non-plastic material D. All A., B. and C....

What is the value of ‘q’ for saturated liquid feed to a distillation column ?

A. 0 B. <1 C. 1 D. >1...

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...