_____________ is not a single oxide-refractory?

Related Mcqs:

Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?

A. Soaking pits B. Reheating furnace C. L.D. converter D. Rotary lime kiln...

Periclase is___________________?

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

With increase in the alumina content in firebricks, its fusion point (refractoriness) ?

A. Decreases linearly B. Remains unchanged C. Increases D. Decreases...

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...

Pick out the wrong statement ?

A. Electrical conductivity of refractory is not important, when these are to be used in electrical furnaces B. Graphite and metals are the good electrical conductor among the refractories and others are all electrical insulators C. Refractories used for lining electrical furnaces should ordinarily have very low electrical conductivity D. Electrical conductivity of porous refractory … Pick out the wrong statement ?Read More...