High thermal conductivity of a refractory material is not important, when it is to be used in the______________________?

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...

Periclase is___________________?

A. Crystalline form of MgO B. MgCO3 C. ZrSO4 D. Amorphous magnesite...

Grog__________________?

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

Periclase refractory contains mainly________________?

A. CaO B. MgO C. Al2O3 D. SiO2...

Colour of fireclay bricks is_________________?

A. Light buff to reddish buff B. Yellow C. Black D. None of these...