Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Chemical Engineering
»
Refractory Technology
Natural silica
mainly contains quartz.
is not stable at high temperature.
transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes.
all (a), (b) and (c).
Correct Answer:
all (a), (b) and (c).
← Previous Question
Next Question→
More Questions from
Refractory Technology
Bottom of basic open hearth furnace are constructed of
Refractories used in/for __________ should have low thermal conductivity.
Magnesite refractories are generally not used in the
Carborundum used for making crucibles for melting non-ferrous metals is chemically
Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to
Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively.
Refractory bricks with lower permeability is produced by using
Which is not a natural insulating material?
Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale.
Fireclay bricks are not used in the
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments