Refractory Technology - Study Mode
[#126] __________ is not a single oxiderefractory.
Correct Answer
(B) Silicon carbide
[#127] An ideal refractory should have high
Correct Answer
(B) Fusion point
[#128] Which is the stable form of silica between 1470°C and the melting point 1713°C ?
Correct Answer
(A) Cristobalite
[#129] Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be
Correct Answer
(C) Either A or B
[#130] Porosity of silica bricks varies from __________ percent.
Correct Answer
(B) 20 to 30