A. 0
B. <1
C. 1
D. >1
What is the value of ‘q’ for saturated liquid feed to a distillation column ? Read More »
Refractory Technology A. Green strength
B. Voids
C. Shrinkage
D. Both B. and C.
A. Superduty fireclay
B. Silica
C. Chromite
D. None of these
Roof of a basic electric furnace is made of _____________ bricks? Read More »
Refractory Technology A. Fireclay
B. Silica
C. Chrome magnesite
D. Zirconia
Outer combustion chamber of blast furnace stove is lined with _____________ bricks? Read More »
Refractory Technology A. Not required to resist the corrosive action of basic slag
B. Not subjected to fluctuation in temperature
C. Used for raising & maintaining high temperature
D. Both B. and C.
A. Oxidising atmosphere
B. Reducing atmosphere
C. Electric furnace
D. Neutral atmosphere
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease
A. Density
B. Specific heat
C. Thermal conductivity
D. None of these
Thermal diffusivity of a refractory brick is high, when its ____________ is high? Read More »
Refractory Technology A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns
Magnesite refractories are generally not used in the___________________? Read More »
Refractory Technology A. Poor resistance to the penetration of molten slag, metal & flue gases
B. Poor heat conductivity & low strength
C. Better thermal spalling resistance
D. All A., B. and C.
High porosity refractory bricks have _______________? Read More »
Refractory Technology