Polymer Technology MCQ Questions & Answers

21

__________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.

A) Percent elongation B) Resilience C) Freezing point D) Strength

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Answer & Solution

Answer: Option B

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22

Polymers are

A) Micromolecules B) Macromolecules C) Sub-micromolecules D) None of these

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Answer & Solution

Answer: Option B

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23

Polythene is a/an

A) Addition polymerisation product B) Condensation polymerisation product C) Thermosetting material D) None of these

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Answer & Solution

Answer: Option A

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24

Polyvinyl alcohol is used as a

A) Cation/anion exchanger B) Water soluble adhesive C) Textile fibre D) Non-sticky coating on frying pans

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Answer & Solution

Answer: Option B

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25

Polyvinyl chloride (PVC)

A) Is produced by polycondensation reaction B) Uses either emulsion or suspension polymerisation methods C) Can be made thermosetting by adding a plasticiser D) Softening temperature is 200°C

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Answer & Solution

Answer: Option B

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26

Glyptal used in the manufacture of paints & lacquers is a __________ polymer.

A) Polyamide B) Polystyrene C) Polyester D) Polyacrylonitrile

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Answer & Solution

Answer: Option C

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27

Nylon 6, 10 which is used for bristles making is superior to nylon 6, 6 due to its lower water absorption capacity, is a/an

A) Polyester B) Polyamide C) Polyisoprene D) Polystyrene

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Answer & Solution

Answer: Option B

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28

__________ polymer is used for making unbreakable crockery.

A) Thermoplastic B) Melamine C) Addition D) None of these

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Answer & Solution

Answer: Option B

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29

Poly Vinyl chloride (PVC) is a __________ material.

A) Thermoplastic B) Thermosetting C) Fibrous D) Chemically active

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Answer & Solution

Answer: Option A

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30

Pick out the wrong statement regarding the solubility characteristics of high polymers.

A) Greater the degree of cross-linking in the polymer, lesser is its solubility B) Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents C) Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent D) High molecul ar weight polymers on dissolving gives solution of very low viscosity

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Answer & Solution

Answer: Option D

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Polymer Technology MCQ Questions & Answers | Chemical Engineering