Which is not a high alumina refractory ?
Which is not a high alumina refractory ?
A. Mullite
B. Corundum
C. Bauxite
D. Dolomite
Similar Posts
‘Spinel’, a refractory mineral is chemically represented as____________________?
‘Sel’, a refractory mineral is chemically represented as____________________?A. MgAl2O4
B. MgAl2O3
C. MgSO4
D. MgAl2O3.2H2OWhich is not a natural insulating material ?
Which is not a natural insulating material ?A. Diatomaceous earth/kieselgur
B. Asbestos
C. Vermiculite
D. None of thesePorosity is induced in insulating refractories by adding________________?
Porosity is induced in insulating refractories by adding________________?A. Powdered naphthalene
B. Ammonium chloride/sulphate
C. Calcium phosphate
D. All A., B. and C.Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?A. Soaking pits
B. Reheating furnace
C. L.D. converter
D. Rotary lime kilnCermets are____________________?
Cermets are____________________?A. Composite material containing both ceramic & metallic constituents
B. Having high strength & resistance to high temperature
C. Used in space vehicles, missiles & nuclear energy plants
D. All A., B. and C.The maximum linear expansion of silica bricks during firing is about ______________ percent?
The maximum linear expansion of silica bricks during firing is about ______________ percent?A. 0.5
B. 1
C. 2
D. 3.5