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 12 of 52

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Q111.
Ramming masses are used for

a.

obtaining monolithic working faces.

b.

repairing construction of various furnace parts.

c.

both (a) & (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b).
Q112.
Pick out the wrong statement.

a.

A ceramic material which becomes fluid upon heating and can be moulded in liquid/viscous state is termed s glass.

b.

Ceramic materials do not undergo vitrification on heating.

c.

Ceramic materials are brittle in nature.

d.

Non-oxide ceramic materials generally act as a semi-conductor.

Discuss
Answer: (b).Ceramic materials do not undergo vitrification on heating.
Q113.
Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale.

a.

chrome or magnesite

b.

silicon carbide

c.

silica

d.

lowduty fireclay

Discuss
Answer: (a).chrome or magnesite
Q114.
Addition of grog in fireclay brick during its manufacture is advantageous, because it results in

a.

less shrinkage in heating, decreased apparent porosity & increased specific gravity.

b.

high strength & thermal spalling resistance.

c.

less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q115.
Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks.

a.

bakelite impregnated or fused periclase

b.

silica

c.

semi-silica

d.

fireclay

Discuss
Answer: (a).bakelite impregnated or fused periclase
Q116.
Fireclay refractories

a.

are not resistant to the action of basic slags.

b.

combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc.

c.

shrink during firing

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q117.
Which is not a high alumina refractory ?

a.

Mullite

b.

Corrundum

c.

Bauxite

d.

Dolomite

Discuss
Answer: (d).Dolomite
Q118.
Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors.

a.

Beryllia

b.

Carborundum

c.

Corundum

d.

Thoria

Discuss
Answer: (a).Beryllia
Q119.
Faster rate of drying of moulded refractories results in high __________ of refractories.

a.

green strength

b.

voids

c.

shrinkage

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q120.
Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone.

a.

preheating

b.

cooling

c.

burning

d.

all

Discuss
Answer: (c).burning
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