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


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


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