A. Are not resistant to the action of basic slags
B. Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming
fusible aluminates silicates etc
C. Shrink during firing
D. All A., B. and C.
Related Mcqs:
- With increase in the porosity, thermal spalling resistance of fireclay brick_______________?
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease - Fireclay bricks is not used for lining the_______________?
A. Cupola
B. Gas producer
C. Bottom of hot metal mixer
D. Roof of open hearth furnace - Fireclay bricks are not used in the_________________?
A. Blast furnace
B. Hot blast stove
C. Cupola
D. Wall of coke oven - Fireclay bricks are not used in the________________?
A. Beehive coke oven
B. By-product coke oven walls
C. Combustion chamber of B.F. stoves
D. Coke oven regenerators - Fireclay bricks are used in the______________?
A. Coke ovens regenerator
B. Outer lining of L.D. converter
C. Hearth bottom of blast furnace
D. Coke oven walls - An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is______________?
A. 0.2500
B. 0.2528
C. 0.5000
D. 0.5055 - Addition of a non-volatile solute to a solvent produces a ______________ in its solvent?
A. Freezing point elevation
B. Boiling point depression
C. Vapor pressure lowering
D. All A., B. & C. - The heat capacity of most substances is greater for the _______________ state?
A. Solid
B. Liquid
C. Gaseous
D. None of these - Elements in a periodic table are arranged in order of their__________________?
A. Atomic number
B. Mass number
C. Atomic weight
D. Metallic characteristics - Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?
A. Nature of the liquid
B. Nature of the gas
C. Temperature of the liquid
D. Total pressure
