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 5 of 52

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Q41.
Maximum alumina content in high alumina refractory can be as high as __________ percent.

a.

30

b.

50

c.

70

d.

90

Discuss
Answer: (d).90
Q42.
Walls, roofs & combustion chambers of annealing furnaces are made of __________ bricks.

a.

high duty fireclay

b.

silica

c.

mullite

d.

carborundum

Discuss
Answer: (a).high duty fireclay
Q43.
Fireclay bricks are used in the

a.

coke ovens regenerator.

b.

outer lining of L.D. converter.

c.

hearth bottom of blast furnace.

d.

coke oven walls.

Discuss
Answer: (a).coke ovens regenerator.
Q44.
Water content in ground refractory material to be shaped into bricks by hand moulding is about __________ percent.

a.

5

b.

20

c.

40

d.

55

Discuss
Answer: (b).20
Q45.
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).

Discuss
Answer: (d).all (a), (b) and (c).
Q46.
Firing temperature is minimum (1250-1400 °C) for __________ bricks.

a.

fireclay

b.

direct bonded basic

c.

silica

d.

magnesite

Discuss
Answer: (a).fireclay
Q47.
Resistance to slag attack of a refractory

a.

depends on the nature of slag & refractory.

b.

decreases at higher temperature.

c.

decreases, if defective joints & cracks exist in the refractory.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q48.
Grog

a.

contains both alumina and silica.

b.

iscrushed firebrick.

c.

is a non-plastic material.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q49.
Test piece for determination of RUL of a refractory is heated in a/an

a.

oxidising atmosphere

b.

reducing atmosphere

c.

electric furnace

d.

neutral atmosphere

Discuss
Answer: (c).electric furnace
Q50.
Magnesite refractories are used for the construction of those furnaces, which are

a.

not required to resist the corrosive action of basic slag.

b.

not subjected to fluctuation in temperature.

c.

used for raising & maintaining high temperature.

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
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