Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

____________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold?

A High thermal conductivity

B Low porosity

C Non-wetting characteristics

D High density

Review Detailed Answer

Correct Answer: Non-wetting characteristics

Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of ______________ percent respectively?

A 80 and 20

B 20 and 80

C 50 and 50

D 60 and 40

Review Detailed Answer

Correct Answer: 80 and 20

Chrome magnesite brick is not used for lining the___________________?

A Hearth of soaking pits

B Bottom hearth of reheating furnace

C Coke oven regenerator

D Burning zone of limestone rotary kilns

Review Detailed Answer

Correct Answer: Coke oven regenerator

_____________ is not a single oxide-refractory?

A Zirconia

B Silicon carbide

C Magnesia

D None of these

Review Detailed Answer

Correct Answer: Silicon carbide

High alumina refractories are used in the ___________________?

A Dome of blast furnace stoves

B Electric arc furnace roof

C Glass melting furnaces

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

Thermal spalling mainly occurs during _____________ of furnaces?

A Cooling down

B Warming up

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Which is the stable form of silica upto 1470°C ?

A Quartz

B Cristobalite

C Tridymite

D None of these

Review Detailed Answer

Correct Answer: Tridymite

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

Review Detailed Answer

Correct Answer: Nuclear reactors, missiles & space crafts

Zircon refractories have__________________?

A Low co-efficient of expansion

B High RUL (1600°C) and refractoriness (> 2000°C)

C High spalling resistance

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

Chromite refractories_____________________?

A Are bonded with lime and clay

B (Free from silica) have better thermal fatigue resistance than silica and magnesite refractories.

C Are resistant to basic slag

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

____________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold?

Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of ______________ percent respectively?

Chrome magnesite brick is not used for lining the___________________?

_____________ is not a single oxide-refractory?

High alumina refractories are used in the ___________________?

Thermal spalling mainly occurs during _____________ of furnaces?

Which is the stable form of silica upto 1470°C ?

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

Zircon refractories have__________________?

Chromite refractories_____________________?