Related Questions

Which of the following ceramic packing materials is the costliest of all?
A Berl saddles
B Raschig rings
C Pall rings
D Intalox saddles
Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?
A Slag cement
B Glasses
C Porcelain/Potteries
D Teflon
Ceramic materials
A Are exemplified by clay and mica
B Are poor electrical conductors due to lack of free electrons
C Never exhibit polymorphism
D All of the above
Ceramic materials fabrication can not be done by
A Welding
B Slip casting
C Extrusion
D Plastic pressing
Ceramic nuclear metals compared to solid nuclear metals have
A higher melting points
B low strength at high temperature
C more chances of radiation damage
D poorer corrosion resistance
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
A Ceramic capacitor
B Mica capacitor
C Both will have identical value of capacitance
D It depends on applied voltage
Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of
A Graphite powder
B Thoria
C Zircon powder
D Beryllium
Which of the following is not used as the ceramic material in 'cermets'?
A Silicides
B Oxides
C Carbides
D Nitrides
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 Corrundum
D Siliceous fireclay
Ceramic cutting tools are
A Made by cold pressing of aluminium oxide powder
B Available in the form of tips
C Brittle and have low bending strength
D All of these

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