Roof of a basic electric furnace is made of ______________ bricks?

Related Mcqs:

Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of ________________?

A. Fireclay B. Silicon carbide C. Corundum D. Siliceous fireclay...

A saturated vapor on being compressed would___________________?

A. Condense B. Form wet steam C. Both A. & B. D. Neither A. nor B....

Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to__________________?

A. Thermal spalling B. Slag attack C. Fusion under load D. CO attack...

A solution with reasonably permanent pH is called a/an _______________ solution?

A. Ideal B. Non-ideal C. Buffer D. Colloidal...

The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg ?

A. 0.2 B. 0.1 C. 0.4 D. 0.6...