Refractoriness/fusion points of ‘Superduty’ refractories is _____________ °C?

Related Mcqs:

Magnesite refractories are generally not used in the__________________?

A. Electric furnace walls B. Steel melting furnace C. Open hearth furnace D. Burning zone of cement kilns...

The atomic heat capacities of all solid elements ______________ with decrease in temperature?

A. Increases B. Decreases C. Remains unchanged D. Approach zero at 0°C...

Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except______________?

A. Cost B. Electrical conductivity C. Thermal conductivity D. Fusion point...

One of the specific gravity scales is “Brix” (used specifically for sugar solution). It is defined as ______________?

A. Brix = (400/G) – 400 B. Brix = 200 (G-1) C. Brix = 145 – (145/G) D. None of these...

Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?

A. Recycling B. Purging C. Bypassing D. Recirculation...