Polymer Production - Chemical Technology - Chemical Engineering Previous Year Questions

1

2007 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2007

Match the synthetic fibres in Group1 with their classification in Group 2.

A

P-2, Q-3, R-1

B

P-3, Q-4, R-2

C

P-3, Q-1, R-3

D

P-3, Q-3, R-4

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2

2011 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2011

Match the polymerisation mechanisms in Group I with the corresponding polymers in Group II

GROUP I	GROUP II
P. Chain growth/addition polymerisation Q. Step growth/condensation polymerisation	I. Polyethylene II. Polyvinyl chloride III. Polyethylene terephthalate

A

P – III; Q – I,II

B

P – I,II; Q – III

C

P – II,III; Q – I

D

P – I; Q – II,III

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3

2012 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2012

Match the polymer in Group I to the polymer characteristic in Group II.
Group I
P. Polyethylene
Q. Phenol-formaldehyde polymer
R. Polyisoprene
S. Polyester
Group II
I. Elastomer
II. Fiber
III. Thermoplastic
IV. Thermosetting polymer

A

P-III, Q-IV, R-I, S-II

B

P-IV, Q-II, R-III, S-I

C

P-III, Q-II, R-I, S-IV

D

P-IV, Q-III, R-I, S-II

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4

2017 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2017

Match the polymerization processes in Group-1 with the polymers in Group-2.
Group-1
P) Free radical polymerization
Q) Ziegler Natta polymerization
R) Condensation polymerization
Group-2
I) Nylon 6,6
II) Polypropylene
III) Poly vinyl chloride
Choose the correct set of combinations.

A

P-I, Q-II, R-III

B

P-III, Q-II, R-I

C

P-I, Q-III, R-II

D

P-II, Q-I, R-III

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5

2018 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2018

Polyvinyl chloride is produced by

A

co-polymerization

B

addition-type kinetics

C

reacting chlorine with polyethylene

D

reacting hydrochloric acid with polyethylene

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6

2018 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2018

Choose the correct statement
In viscose rayon manufacturing process,

A

carbon disulphide used as reactant for xanthate formation is regenerated in a later step

B

caustic soda used as reactant for steeping of cellulose is regenerated in a later step

C

sulphuric acid is used in steeping process of cellulose

D

the spun viscose rayon is hardened in an alkali bath

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7

2019 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2019

The combination that correctly matches the polymer in Group-1 with the polymerization reaction type in Group-2 is

A

P-II, Q-I, R-III

B

P-I, Q-III, R-II

C

P-III, Q-II, R-I

D

P-II, Q-III, R-I

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8

2020 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2020

Which one of the following is NOT CORRECT?

A

nylon-6,6 is produced by condensation polymerization

B

phenol-formaldehyde resin is a thermosetting polymer

C

high density polyethylene (HDPE) is produced by condensation polymerization

D

poly(ethylene terephthalate) (PET) is a polyester

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9

2023 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2023

Nitrile rubber is manufactured via polymerization process. Which one of the following options is the CORRECT pair of monomers used in this process?

A

Acrylonitrile and styrene

B

Acrylonitrile and butadiene

C

Butadiene and styrene

D

Butadiene and isoprene

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10

2025 · Chemical Engineering · Chemical Technology · Polymer Production

Chemical Engineering (CH) 2025

In the production of polyvinyl chloride (PVC) from ethylene and chlorine, the sequential order of reactions is

A

Chlorination followed by Dehydrochlorination

B

Dehydrochlorination followed by Chlorination

C

Hydrogenation followed by Chlorination

D

Dehydrochlorination followed by Hydrogenation

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