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 20 of 52

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Q191.
With decrease in porosity, the __________ of the refractories decreases.

a.

strength

b.

thermal conductivity

c.

spalling resistance

d.

none of these

Discuss
Answer: (c).spalling resistance
Q192.
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: (c).>1350
Q193.
__________ 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

Discuss
Answer: (c).Non-wetting characteristics
Q194.
Bauxite calcining rotary kilns are lined with __________ bricks.

a.

fireclay

b.

carbon

c.

85% alumina

d.

corundum

Discuss
Answer: (c).85% alumina
Q195.
Use of higher percentage of lime for bonding silica bricks, reduces their

a.

strength

b.

abrasion resistance

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q196.
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 (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q197.
Which of the following bricks should not be used, if the furnace is to be used intermit-tantly ?

a.

Firebricks

b.

Silica bricks

c.

Silicon carbide bricks

d.

Sillimanite

Discuss
Answer: (b).Silica bricks
Q198.
Refractory castables are used for

a.

producing monolithic linings.

b.

patch work.

c.

minimising the number of joints in the structure.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q199.
The largest consumer of refractories is the __________ industry.

a.

cement

b.

metallurgical

c.

fertiliser

d.

power

Discuss
Answer: (b).metallurgical
Q200.
Graphite or carbon refractories

a.

exihibit wetting characteristics.

b.

should be used in neutral or reducing atmosphere.

c.

exhibit high shrinkage on thermal treatment.

d.

are not resistant to corrosion by slag.

Discuss
Answer: (b).should be used in neutral or reducing atmosphere.
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