Refractory Technology MCQ Questions & Answers

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Each section contains 100 MCQs on Refractory Technology .

Porosity is induced in insulating refractories by adding

A) Powdered naphthalene B) Ammonium chloride/sulphate C) Calcium phosphate D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

A steel member used in the furnace construction to take the thrust of the brickwork is called

A) Buckstay B) Breast wall C) Armouring D) Baffle

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Answer & Solution

Answer: Option A

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

Pick out the wrong statement.

A) A ceramic material which becomes fluid upon heating and can be moulded in liquid/viscous state is termed s glass B) Ceramic materials do not undergo vitrification on heating C) Ceramic materials are brittle in nature D) Non-oxide ceramic materials generally act as a semi-conductor

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Answer & Solution

Answer: Option B

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

10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite.

A) Spalling resistance B) Refractoriness C) Crushing strength D) Resistance to slag

Discuss

Answer & Solution

Answer: Option A

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

Which is a basic refractory?

A) Fireclay B) Silica C) Chrome magnesite D) None of these

Discuss

Answer & Solution

Answer: Option C

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

Which one expands on heating?

A) Silica bricks B) Fireclay bricks C) Both A & B D) Neither A nor B

Discuss

Answer & Solution

Answer: Option A

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

Fireclay bricks are never used in the

A) Beehive oven B) Coke oven walls C) Zinc roaster D) Lead blast furnace

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Answer & Solution

Answer: Option B

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

High density refractory bricks have lower

A) Spalling resistance B) Thermal conductivity C) Fusion point D) Slag penetration resistance

Discuss

Answer & Solution

Answer: Option A

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

Zircon refractories have

A) Low co-efficient of expansion B) High RUL (1600°C) and refractoriness (> 2000°C) C) High spalling resistance D) All of the above

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Answer & Solution

Answer: Option D

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

Zirconia refractory

A) Does not react with basic slags B) Is produced from baddeleyite C) Can not be used as an insulator D) Has poor electrical conductivity at high temperature

Discuss

Answer & Solution

Answer: Option B

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

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Refractory Technology MCQ Questions & Answers | Chemical Engineering