Refractory Technology MCQ Questions & Answers

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Each section contains 100 MCQs on Refractory Technology .

Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory

A) Mortars B) Cements C) Castables D) None of these

Discuss

Answer & Solution

Answer: Option C

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

Insulating refractories should have

A) High porosity B) Low thermal conductivity C) Both A & B D) Neither A nor B

Discuss

Answer & Solution

Answer: Option B

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

Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the

A) Hearth of the blast furnace B) Nuclear reactors, missiles & space crafts C) Insulation of high temperature furnaces D) Roof of electric furnaces

Discuss

Answer & Solution

Answer: Option B

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

Basic bricks are not made of

A) Fireclay B) Magnesite C) Foresterite D) Chromite

Discuss

Answer & Solution

Answer: Option A

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

Alumina-graphite bricks are used for lining the

A) Slide gate in teeming laddies B) Continuous casting systems 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

Firing temperature of magnesite bricks is about __________ °C.

A) 800-1000 B) 1000-1200 C) 1600-1800 D) 2400-2600

Discuss

Answer & Solution

Answer: Option C

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

Maximum safe working temperature for fireclay bricks is about __________ °C.

A) 1150 B) 1300 C) 1450 D) 1550

Discuss

Answer & Solution

Answer: Option D

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

Chemically, mullite refractories is

A) 3Al₂O₃.2SiO₂ B) Al₂O₃ C) ZrSO₄ D) ThO₂

Discuss

Answer & Solution

Answer: Option A

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

Carbon refractories

A) Do not burn/oxidise, when exposed to air on heating B) Are not attacked by slags, as they are not wetted by melts C) Do not resist temperature fluctuations D) Have extremely low thermal & electrical conductivities

Discuss

Answer & Solution

Answer: Option B

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

Carbon refractory blocks

A) Are wetted by molten iron B) Are used in the hearth of blast furnace C) Are acidic in nature D) All of the above

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