Which of the following is not a neutral refractory ?
Which of the following is not a neutral refractory ?
A. Silicon carbide
B. Magnesite
C. Chromite
D. Graphite
Similar Posts
Furnace atmosphere for softening temperature determination of refractories (in which Seger Cones are placed) should be __________________?
Furnace atmosphere for softening temperature determination of refractories (in which Seger Cones are placed) should be __________________?A. Oxidising
B. Neutral
C. Either A. or B.
D. Neither A. nor B.Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the_______________?
Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the_______________?A. Hearth of the blast furnace
B. Nuclear reactors, missiles & space crafts
C. Insulation of high temperature furnaces
D. Roof of electric furnacesCarbon refractory blocks ___________________?
Carbon refractory blocks ___________________?A. Are wetted by molten iron
B. Are used in the hearth of blast furnace
C. Are acidic in nature
D. All A., B. and C.Sillimanite is a _____________ refractory?
Sillimanite is a _____________ refractory?A. Basic
B. Neutral
C. High alumina
D. InsulatingSilica refractories are not used in _________________?
Silica refractories are not used in _________________?A. Coke oven walls
B. Beehive coke ovens
C. Dome and upper portion of B.F. stoves
D. Open hearth furnace roofThe 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