A. A ceramic material which becomes fluid upon heating and can be moulded in liquid/viscous state is termed s glass.
B. Ceramic materials do not undergo vitrification on heating.
C. Ceramic materials are brittle in nature.
D. Non-oxide ceramic materials generally act as a semi-conductor.
Correct Answer
Ceramic materials do not undergo vitrification on heating.
Refractory Technology problems
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1. Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors.
A. Insulating refractories used in place of regular refractory bricks are usually called light weight refractories, and they have similar composition as heavy bricks.
B. Graphite refractories are also called plumbago refractories.
C. Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28.
D. Calcined magnesite is also called dead burnt magnesite.