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!

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Refractory and Polymer Technology MCQs | Page 7 of 52

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Q61.
Insulating refractories should have

a.

high porosity

b.

low thermal conductivity

c.

both (a) and (b)

d.

neither (a) not (b)

Discuss
Answer: (b).low thermal conductivity
Q62.
Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² .

a.

450

b.

250

c.

150

d.

65

Discuss
Answer: (d).65
Q63.
Zirconia refractory

a.

does not react with basic slags.

b.

is produced from baddeleyite.

c.

can not be used as an insulator.

d.

has poor electrical conductivity at high temperature.

Discuss
Answer: (b).is produced from baddeleyite.
Q64.
Which one contains maximum percentage of Al₂O₃ ?

a.

Firebrick

b.

Sillimanite

c.

Magnesite

d.

Aluminous firebrick

Discuss
Answer: (b).Sillimanite
Q65.
Which of the following does not occur during firing/burning of refractories ?

a.

Removal of water of hydration.

b.

Vitrification.

c.

Decrease in crushing strength.

d.

Development of stable mineral form.

Discuss
Answer: (c).Decrease in crushing strength.
Q66.
Silicon carbide refractories are used in the

a.

muffle furnace

b.

zinc smelting furnace

c.

ceramic recuperators

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q67.
Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent.

a.

2-3

b.

5-7

c.

7-12

d.

14-20

Discuss
Answer: (d).14-20
Q68.
Fireclay bricks are never used in the

a.

beehive oven

b.

coke oven walls

c.

zinc roaster

d.

lead blast furnace

Discuss
Answer: (b).coke oven walls
Q69.
With increasing alumina content, the fusion point of high alumina refractories

a.

increases.

b.

decreases.

c.

remains constant.

d.

may increase or decrease ; depends on its alumina content.

Discuss
Answer: (a).increases.
Q70.
Chrome magnesite bricks are used in the

a.

side walls of soaking pits and arc furnaces.

b.

copper melting furnaces & converters.

c.

burner block of glass tanks.

d.

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

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