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 10 of 52

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Q91.
Refractoriness under load (RUL) is the most important property for the refractory bricks

a.

at the hearth bottom of the furnace on which stock is placed.

b.

used for furnace insulation.

c.

used in the roof of the furnace.

d.

none of these.

Discuss
Answer: (a).at the hearth bottom of the furnace on which stock is placed.
Q92.
Si percentage in silica refractories used in the walls of coke oven is about

a.

45

b.

60

c.

80

d.

95

Discuss
Answer: (d).95
Q93.
Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material?

a.

aluminium phosphate

b.

water

c.

lime

d.

plaster of paris

Discuss
Answer: (b).water
Q94.
High thermal conductivity of a refractory material is not important, when it is to be used in the

a.

coke oven regenarators

b.

muffle furnace

c.

blast furnace

d.

recuperators

Discuss
Answer: (c).blast furnace
Q95.
Maximum safe working temperature for fireclay bricks is about __________ °C.

a.

1150

b.

1300

c.

1450

d.

1550

Discuss
Answer: (d).1550
Q96.
Ferromagnetic ceramic material is not used in the

a.

thermal insulation

b.

transformers

c.

magnetic switches

d.

television sets

Discuss
Answer: (a).thermal insulation
Q97.
Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity).

a.

fireclay

b.

carborundum

c.

graphite

d.

chromite

Discuss
Answer: (c).graphite
Q98.
Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage ?

a.

Tar bonded dolomite bricks

b.

Fireclay bricks

c.

Mullite bricks

d.

Magnesite bricks

Discuss
Answer: (a).Tar bonded dolomite bricks
Q99.
Alumina-graphite bricks are used for lining the

a.

slide gate in teeming laddies.

b.

continuous casting systems.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q100.
Spalling resistance of a refractory can not be increased by

a.

increasing its porosity.

b.

using a coarser grog during its manufacture.

c.

decreasing its thermal co-efficient of expansion.

d.

making it denser.

Discuss
Answer: (d).making it denser.
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