Refractory and Polymer Technology MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Refractory and Polymer Technology, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Refractory and Polymer Technology MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Refractory and Polymer Technology mcq questions that explore various aspects of Refractory and Polymer Technology problems. Each MCQ is crafted to challenge your understanding of Refractory and Polymer Technology principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Refractory and Polymer Technology MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Refractory and Polymer Technology. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Refractory and Polymer Technology knowledge to the test? Let's get started with our carefully curated MCQs!

Refractory and Polymer Technology MCQs | Page 13 of 52

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Q121.
The highest melting pure oxide (m.p. > 3000°C) is

a.

thoria

b.

alumina

c.

beryllia

d.

zirconia

Discuss
Answer: (a).thoria
Q122.
In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours.

a.

700

b.

1000

c.

1600

d.

2000

Discuss
Answer: (c).1600
Q123.
Which is not an acidic refractory ?

a.

Silica

b.

Fireclay

c.

High alumina refractory

d.

Carbon black

Discuss
Answer: (d).Carbon black
Q124.
Natural silica

a.

mainly contains quartz.

b.

is not stable at high temperature.

c.

transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q125.
Thermal conductivity of refractory bricks

a.

increases with decrease in porosity.

b.

decreases with decreases in porosity.

c.

is independent of its porosity and is maximum for insulating bricks.

d.

increases with the amount of air entrapped in pores.

Discuss
Answer: (a).increases with decrease in porosity.
Q126.
Dolomite bricks have good resistance to attack by

a.

molten steel

b.

iron oxide

c.

lime slag

d.

none of these

Discuss
Answer: (a).molten steel
Q127.
Bottom of basic open hearth furnace are constructed of

a.

dead burnt magnesite ramming mass.

b.

porous fireclay bricks.

c.

semi-silica bricks.

d.

silicon carbide bricks.

Discuss
Answer: (a).dead burnt magnesite ramming mass.
Q128.
Which form of silica has the highest specific gravity ?

a.

Quartz

b.

Cristobalite

c.

Tridymite

d.

All have the same specific gravity

Discuss
Answer: (a).Quartz
Q129.
Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of

a.

fireclay

b.

silicon carbide

c.

corrundum

d.

siliceous fireclay

Discuss
Answer: (b).silicon carbide
Q130.
__________ is the measure of the strength of refractory under the combined effect of temperature & load.

a.

Porosity

b.

RUL

c.

Specific gravity

d.

Thermal conductivity

Discuss
Answer: (b).RUL
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