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 4 of 52

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Q31.
Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except

a.

cost

b.

electrical conductivity

c.

thermal conductivity

d.

fusion point

Discuss
Answer: (a).cost
Q32.
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?

a.

Cork

b.

Saw dust

c.

Sand

d.

Chemically prepared foam

Discuss
Answer: (c).Sand
Q33.
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 (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q34.
Chemically, mullite refractories is

a.

3Al₂O₃.2SiO₂

b.

Al₂O₃

c.

ZrSO₄

d.

ThO₂

Discuss
Answer: (a).3Al₂O₃.2SiO₂
Q35.
Panel test determines the __________ of refractories.

a.

fusion point

b.

spalling resistance

c.

slag penetration resistance

d.

refractoriness under load (RUL)

Discuss
Answer: (b).spalling resistance
Q36.
Fireclay bricks are not used in the

a.

beehive coke oven.

b.

by-product coke oven walls.

c.

combustion chamber of B.F. stoves.

d.

coke oven regenerators.

Discuss
Answer: (b).by-product coke oven walls.
Q37.
Fusion point of a basic refractory material is

a.

reduced by the addition of acid oxides.

b.

increased by the addition of acid oxides.

c.

not affected by the addition of acid oxides.

d.

always less than 1000°C.

Discuss
Answer: (a).reduced by the addition of acid oxides.
Q38.
RUL of refractories depends on the

a.

chemical composition.

b.

physical structure.

c.

presence of impurities like iron & alkali.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q39.
Which is the stable form of silica between 1470°C and the melting point 1713°C ?

a.

Cristobalite

b.

Tridymite

c.

Quartz

d.

None of these

Discuss
Answer: (a).Cristobalite
Q40.
Elastomers are

a.

thermosetting material.

b.

exemplified by protein derivatives.

c.

having high flexural strength.

d.

having very high tensile strength and heat resistance.

Discuss
Answer: (c).having high flexural strength.
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