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.

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Refractory and Polymer Technology MCQs | Page 48 of 52

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Q471.
Cellulose content in bomboo fibre is about __________ percent.

a.

10

b.

20

c.

50

d.

85

Discuss
Answer: (c).50
Q472.
In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

a.

cross linked polystyrene.

b.

phenol formaldehyde resins.

c.

polyesters.

d.

polyamides.

Discuss
Answer: (a).cross linked polystyrene.
Q473.
Which of the following has the weakest intermolecular forces ?

a.

Polyisoprene

b.

Nylon-66

c.

Polystyrene

d.

Bakelite

Discuss
Answer: (a).Polyisoprene
Q474.
Properties of a polymer is affected by the

a.

chain length.

b.

intermolecular forces.

c.

branching & cross-linking.

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q475.
In condensation polymerisation as compared to addition polymerisation

a.

the monomers are unsaturated compounds.

b.

no co-product is lost.

c.

the monomers contain two functional groups.

d.

generally only one monomer is involved

Discuss
Answer: (c).the monomers contain two functional groups.
Q476.
Thermosplastic materials

a.

do not soften on application of heat.

b.

are heavily branched molecules.

c.

are solvent insoluble.

d.

none of these.

Discuss
Answer: (d).none of these.
Q477.
Polyvinyl acetate is never used for making

a.

moulded articles

b.

fibres

c.

adhesives

d.

all (a), (b) & (c)

Discuss
Answer: (a).moulded articles
Q478.
Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is

a.

7 kgf/cm² and 70 °C.

b.

1000 kgf/cm² and 100°C.

c.

7 kgf/cm² and 700°C.

d.

1 kgf/cm² (gage) and 70°C.

Discuss
Answer: (a).7 kgf/cm² and 70 °C.
Q479.
Vulcanisation of rubber does not increase its

a.

elasticity

b.

plasticity

c.

ductility

d.

none of these

Discuss
Answer: (b).plasticity
Q480.
In nylon-6, the number 6 represents the total number of

a.

carbon atoms in the ring.

b.

carbon atoms in the linear polymer chain.

c.

nitrogen atoms in the ring.

d.

hydrogen atoms in the ring.

Discuss
Answer: (b).carbon atoms in the linear polymer chain.
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