Refractory Technology MCQ Questions & Answers

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Each section contains 100 MCQs on Refractory Technology .

The largest consumer of refractories is the __________ industry.

A) Cement B) Metallurgical C) Fertiliser D) Power

Discuss

Answer & Solution

Answer: Option B

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

Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm²) is __________ °C.

A) 500 B) 1000 C) > 1350 D) > 2000

Discuss

Answer & Solution

Answer: Option C

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

Which is the most stable crystalline form of silica at room temperature?

A) Quartz B) Cristobalite C) Tridymite D) None of these

Discuss

Answer & Solution

Answer: Option A

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

Fireclay refractories

A) Are not resistant to the action of basic slags B) Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc C) Shrink during firing D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

Fireclay refractories have

A) Low co-efficient of thermal expansion B) Poor thermal spalling resistance C) Tendency to expand unduly high during firing D) Very high cost

Discuss

Answer & Solution

Answer: Option A

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

'Super refractories' are made from pure

A) Carbides B) Oxides C) Borides D) Nitrides

Discuss

Answer & Solution

Answer: Option B

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

Pyrometric cone equivalent (PCE) of a refractory is the measure of its

A) Spalling resistance B) Fusion point C) Resistance to slag penetration D) Resistance to carbon monoxide attack

Discuss

Answer & Solution

Answer: Option B

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

Grog addition in fireclay during brick manufacture is done to

A) Reduce its shrinkage on heating B) Impart greater spalling resistance C) Enhance the strength of fired refractories D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

The maximum linear expansion of silica bricks during firing is about __________ percent.

A) 0.5 B) 1 C) 2 D) 3.5

Discuss

Answer & Solution

Answer: Option D

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

The highest melting pure oxide (m.p. > 3000°C) is

A) Thoria B) Alumina C) Beryllia D) Zirconia

Discuss

Answer & Solution

Answer: Option A

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

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Refractory Technology MCQ Questions & Answers | Chemical Engineering