7000+ Refractory Technology MCQ Questions and Answers - 1
Question: 1
The insulation material suitable for low temperature application to prevent heat gain is
(A) Mineral fibre
(B) Silica
(C) Polyurethane
(D) Fibre glass
Ans: D
Fibre glass
Question: 2
Canister is a source of
(A) Magnesite
(B) Lime
(C) Periclase
(D) Silica
Ans: D
Silica
Question: 3
High refractoriness of refractory bricks means, that it has a
(A) Low porosity
(B) High resistance to fusion
(C) Low spalling resistance
(D) High spalling resistance
Ans: B
High resistance to fusion
Question: 4
Which property of refractories is the most important for top section of the blast furnace?
(A) Resistance to corrosion by slag
(B) Stability of volume at high temperature
(C) Resistance to slag penetration
(D) Resistance to abrasion
Ans: D
Resistance to abrasion
Question: 5
Which of the following is not a neutral refractory?
(A) Graphite
(B) Chromite
(C) Silicon carbide
(D) Magnesite
Ans: D
Magnesite
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