A. Chrome or magnesite
B. Silicon carbide
C. Silica
D. Low duty fireclay
Correct Answer: Chrome or magnesite ✔
Last Updated: March 04, 2019
Related MCQs
- Refractories used in/for __________ should have low thermal conductivity?
- Faster rate of drying of moulded refractories results in high __________ of refractories?
- Carborundum used for making crucibles for melting non-ferrous metals is chemically__________?
- Permeability of bricks is a measure of the__________?
- Fireclay bricks are not used in the__________?
- Which form of silica has the highest specific gravity ?
- Thermal conductivity of refractory bricks__________?
- Magnesite refractories are generally not used in the__________?
- Which is not an acidic refractory ?
- Which is a neutral refractory ?
- Which is an acidic refractory ?
- In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours?
- Fireclay bricks is not used for lining the__________?
- Fireclay refractories__________?
- Silica bricks are never used for lining the__________?
- Refractory bricks having lower porosity have __________?
- Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of __________?
- Pure oxide refractories are generally monocrystalline in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors?
- Quartz is__________?
- With increase in the porosity, thermal spalling resistance of fireclay brick__________?
- Refractoriness/fusion points of ‘Superduty’ refractories is __________ °C?
- Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called__________?