Refractory Technology MCQ Questions & Answers

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Each section contains 100 MCQs on Refractory Technology .

With increase in the porosity, thermal spalling resistance of fireclay brick

A) Increases B) Decreases C) Remains same D) May increase or decrease

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Use of higher percentage of lime for bonding silica bricks, reduces their

A) Strength B) Abrasion resistance C) Both A & B D) Neither A nor B

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Ganister is a source of the

A) Silica B) Periclase C) Lime D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Faster rate of drying of moulded refractories results in high __________ of refractories.

A) Green strength B) Voids C) Shrinkage D) Both B and C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Chrome magnesite bricks are used in the

A) Side walls of soaking pits and arc furnaces B) Copper melting furnaces & converters C) Burner block of glass tanks D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Grog . . . . . . . .

A) Contains both alumina and silica B) Iscrushed firebrick C) Is a non-plastic material D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Refractories used in/for __________ should have low thermal conductivity.

A) Coke ovens B) Insulation C) Regenerators D) Muffle furnaces

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Panel test determines the __________ of refractories.

A) Fusion point B) Spalling resistance C) Slag penetration resistance D) Refractoriness under load (RUL)

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm².

A) 10 B) 100 C) 500 D) 1000

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Si percentage in silica refractories used in the walls of coke oven is about

A) 45 B) 60 C) 80 D) 95

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Refractory Technology MCQ Questions & Answers | Chemical Engineering