Refractory Technology MCQ Questions & Answers

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Each section contains 100 MCQs on Refractory Technology .

Segar cones are used for the determination of __________ of refractories.

A) Softening temperature B) Spalling resistance C) Electrical conductivity D) Resistance to slag attack

Discuss

Answer & Solution

Answer: Option A

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

RUL of refractories depends on the

A) Chemical composition B) Physical structure C) Presence of impurities like iron & alkali D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

Firing of refractory brick is done to

A) Dehydrate the dried refractory B) Develop stable mineral forms in them C) Form ceramic bonds necessary for development of high crushing strength in the finished product D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent.

A) Fireclay B) Silica C) Magnesite D) Corundum

Discuss

Answer & Solution

Answer: Option A

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

With decrease in porosity, the __________ of the refractories decreases.

A) Strength B) Thermal conductivity C) Spalling resistance D) None of these

Discuss

Answer & Solution

Answer: Option C

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

Tar dolomite bricks are used in the

A) Basic Bessemer converter B) Basic open hearth furnace C) Electric furnaces D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

Chromite refractories are used in

A) Bottom of soaking pits B) Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other 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

Carbon refractories have very high

A) Wetting characteristics B) Refractoriness C) Thermal conductivity D) Both B and C

Discuss

Answer & Solution

Answer: Option D

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

Pick out the wrong statement.

A) Sand & coke is the main raw material for the manufacture of silicon carbide B) Carbon refractories can not be used in the furnaces operating under reducing conditions C) Mullite can be obtained by the heating of alusite, kyanite or silimanite D) Silica occurs in nature in all cellular, amorphous or crystalline form

Discuss

Answer & Solution

Answer: Option B

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

Fireclay bricks are not used in the

A) Blast furnace B) Hot blast stove C) Cupola D) Wall of coke oven

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