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 15 of 52

Discover more Topics under Basic Chemical Engineering

Q141.
Refractory bricks having lower porosity have

a.

high insulating properties

b.

low heat capacity

c.

low thermal conductivity

d.

greater strength

Discuss
Answer: (d).greater strength
Q142.
Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively.

a.

80 and 20

b.

20 and 80

c.

50 and 50

d.

60 and 40

Discuss
Answer: (a).80 and 20
Q143.
Pick out the wrong statement.

a.

Refractories used in muffle furnace should have low thermal conductivity.

b.

The electrical resistivity of refractories drops rapidly with rise in temperature.

c.

For reducing spalling tendency, the refractory should be well fired and its porosity should be more.

d.

Refractoriness under load (RUL) of a refractory is always less than its refractoriness.

Discuss
Answer: (a).Refractories used in muffle furnace should have low thermal conductivity.
Q144.
__________ bricks should not be used in oxidising atmosphere.

a.

Tar dolomite

b.

Carbon

c.

Silica

d.

Fireclay

Discuss
Answer: (b).Carbon
Q145.
Pick out the wrong statement.

a.

Insulating refractories used in place of regular refractory bricks are usually called light weight refractories, and they have similar composition as heavy bricks.

b.

Graphite refractories are also called plumbago refractories.

c.

Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28.

d.

Calcined magnesite is also called dead burnt magnesite.

Discuss
Answer: (c).Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28.
Q146.
Fusion temperature of pure silica (SiO₂) is __________ °C.

a.

1350

b.

1715

c.

2570

d.

2800

Discuss
Answer: (b).1715
Q147.
Addition of zircon to silica refractory brick improves its

a.

crushing strength

b.

resistance to slag attack

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).resistance to slag attack
Q148.
Which is a neutral refractory ?

a.

Graphite

b.

Magnesite chrome

c.

Silica

d.

Magnesia

Discuss
Answer: (a).Graphite
Q149.
Permeability of bricks is a measure of the

a.

refractoriness.

b.

melting point.

c.

rate at which a fluid will pass through the pores.

d.

expansion during heating.

Discuss
Answer: (c).rate at which a fluid will pass through the pores.
Q150.
With increase in the density of silica refractories, its

a.

resistance to slag attack increases.

b.

spalling resistance reduces.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Page 15 of 52