21. With increase in the porosity, thermal spalling resistance of fireclay brick
22. Use of higher percentage of lime for bonding silica bricks, reduces their
23. Ganister is a source of the
24. Faster rate of drying of moulded refractories results in high __________ of refractories.
25. Chrome magnesite bricks are used in the
26. Grog . . . . . . . .
27. Refractories used in/for __________ should have low thermal conductivity.
28. Panel test determines the __________ of refractories.
29. Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm².
30. Si percentage in silica refractories used in the walls of coke oven is about
Read More Section(Refractory Technology)
Each Section contains maximum 100 MCQs question on Refractory Technology. To get more questions visit other sections.