Category: Refractory Technology

A. Not required to resist the corrosive action of basic slag
B. Not subjected to fluctuation in temperature
C. Used for raising & maintaining high temperature
D. Both B. and C.

A. Increased by the addition of basic oxides
B. Reduced by the addition of basic oxides
C. Not affected by the addition of basic oxides
D. Always more than 2500°C

A. Silica
B. Fireclay
C. Dolomite
D. Magnesite

A. Fireclay
B. Magnesite
C. Forsterite
D. Chromite

A. Fireclay
B. Direct bonded basic
C. Silica
D. Magnesite

A. Fireclay
B. Silica
C. Dolomite
D. Very low alumina

A. Diatomaceous earth/kieselgur
B. Asbestos
C. Vermiculite
D. None of these

A. 5-10
B. 10-25
C. 25-35
D. 35-50

A. Crystalline form of MgO
B. MgCO3
C. ZrSO4
D. Amorphous magnesite

A. Silica bricks
B. Fireclay bricks
C. Both A. & B.
D. Neither A. nor B.