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 17 of 52

Discover more Topics under Basic Chemical Engineering

Q161.
Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C.

a.

770

b.

570

c.

270

d.

70

Discuss
Answer: (c).270
Q162.
With increase in the alumina content, the refractoriness of high alumina refractories

a.

increases

b.

decreases

c.

remains same

d.

may increase or decrease

Discuss
Answer: (a).increases
Q163.
A steel member used in the furnace construction to take the thrust of the brickwork is called

a.

buckstay

b.

breast wall

c.

armouring

d.

baffle

Discuss
Answer: (a).buckstay
Q164.
With increase in the porosity, thermal spalling resistance of fireclay brick

a.

increases

b.

decreases

c.

remains same

d.

may increase or decrease

Discuss
Answer: (a).increases
Q165.
Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of

a.

segar cones.

b.

muffles for muffle furnaces.

c.

insulating bricks.

d.

crucibles used for melting of high purity metals.

Discuss
Answer: (d).crucibles used for melting of high purity metals.
Q166.
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
Q167.
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
Q168.
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.
Q169.
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
Q170.
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).
Page 17 of 52