chemical engineering polymer technology Mcqs
1. Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?
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A. Nylon-66

B. PVC

C. Polystyrene

D. Terylene
2. The monomer of poly vinyl chloride (PVC) is__________________?
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A. Ethylene dichloride

B. Chloroethane

C. Ethyl chloride

D. Chloroform

3. Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are__________________?
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A. 0C and 3 kgf/cm2

B. 20C and 1 kgf/cm2

C. 5C and 1 kgf/cm2

D. 0C and 1 kgf/cm2

4. _______________ practically possess no elasticity?
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A. Vulcanite or ebonite

B. Epoxy resin

C. Polysulphide rubber

D. Spandex fibre

5. Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?
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A. Cellulose

B. Nucleic acids

C. Proteins

D. Starch

6. Non sulphonated hard bakelites are not used for making _______________________?
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A. Combs

B. Formica table tops

C. Ion-exchange resins

D. Fountain pen barrels

7. Perspex can be used as a substitute of glass. Its monomer is__________________?
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A. DMT

B. Butadiene

C. Tetrafluoroethylene

D. Methyl methacrylate
8. ____________ polymer is used for making unbreakable crockery?
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A. Melamine

B. Addition

C. None of these

D. Thermoplastic

9. Polyvinyl alcohol is used as a___________________?
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A. Cation/anion exchanger

B. Water soluble adhesive

C. Non-sticky coating on frying pans

D. Textile fibre

10. Which of the following polymers is used for making a non stick coating on frying pans ?
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A. Perspex

B. PVC

C. Bakelite

D. Teflon
11. Neoprene is rendered non-inflammable, because of_____________________?
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A. The absence of chlorine atoms in its monomer

B. Its cross-linked structure

C. Its linear chain structure

D. The presence of chlorine atoms in its monomer
12. Polypropylene compared to polythene is___________________?
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A. Stronger

B. Harder

C. Lighter

D. All A., B. and C.
13. Buna-S is also known as_________________?
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A. Teflon

B. Polycrylates

C. PTFE

D. SBR
14. Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of _______________ percent?
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A. 1-1000

B. 1000-1500

C. 1500-2000

D. 2000-2500

15. Thermoplastic resins usually____________________?
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A. Permanent setting resins

B. Less brittle than thermosetting resins

C. Cannot be reclaimed from waste

D. Remain hard as long as they are hot

16. Epoxy resin is a polymer containing two or more groups of the bellow fig. is called epoxide group or ethoxyline group. It is a _______________?
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A. Polyamide & an elastomer

B. Good adhesive

C. Surface coating agent

D. Both B. and C.
17. Amino resins are used in paper treatment to improve its__________________?
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A. Folding endurance

B. All A., B. & C.

C. Wet rub resistance

D. Wet tear and bursting strength

18. Viscosity of a polymer solution or melt _________________?
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A. Does not vary with temperature rise

B. Decreases with increase in molecular weight

C. Increases with increase in temperature

D. Decreases with increase in temperature

19. Nylon-6 as compared to nylon-66 is_________________?
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A. Having higher melting point

B. More abrasion resistant

C. Harder

D. None of these
20. Automobile steering wheels are normally made of__________________?
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A. Cellulose acetate

B. Cellulose nitrate

C. PVC

D. High density polythene

21. The rate controlling step in the manufacture of silicone rubber is the_________________?
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A. Condensation of siloxane to silicone

B. Polymer termination step

C. None of these

D. Initial hydrolysis of silicone monomer
22. Zeigler process________________?
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A. Employs very high pressure

B. Produces low density polythene

C. Produces high density polythene

D. Uses no catalyst

23. Mastication of rubber means_______________?
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A. Its softening

B. Depression of its freezing point

C. A treatment to retard its deterioration due to oxidation

D. Improving its curing rate

24. Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its_________________?
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A. Strength

B. Elasticity

C. Plasticity

D. Weathering characteristics
25. Pick out the wrong statement ?
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A. Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

B. One important copolymer of styrene is SBR, which is widely used in the manufacture of

C. For the manufacture of styrene, the major raw materials are benzene and ethylene

D. Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis

E. omobile tyres

26. Phosphates (e.g., tricresyl, tributyl, tetrabutyl, triphenyl etc.) are added to polymers to act as __________________?
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A. Transparency improver

B. Anti-shrinkage agents

C. Plasticisers

D. Hardeners

27. Main constituent of cotton fiber is __________________?
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A. Cellulose

B. Lignin

C. Starch

D. Gelatine

28. Which of the following is an inorganic polymer ?
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A. Perspex

B. Bakelite

C. Teflon

D. Silicones
29. In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for _______________ fibres?
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A. Polythene

B. PVC

C. Rayon

D. Polyvinyl acetate

30. Styrene butadiene rubber (SBR) as compared to natural rubber has_______________?
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A. Greater amount of heat build up heavy loading

B. All A., B. and C.

C. Poorer resistance

D. Poor tensile strength

31. Condensation polymerisation of formaldehyde with _____________ does not produce phenolic resin?
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A. Melamine

B. Para-cresol

C. Resorcinol

D. Phenol

32. The organic acid monomer in nylon-66 is __________________?
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A. Terephthalic acid

B. Adipic acid

C. Benzoic acid

D. Sebacic acid

33. Alkyd resin e.g., glyptal resin formed by Phthalic anhydride and glycerine is not used_______________?
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A. For surface coating of automobiles & air crafts

B. As plasticiser for PVC & nitrocellulose

C. For fibre making

D. For film forming materials

34. A copolymer is formed by the combination of two or more monomer molecules_________________?
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A. Of the same monomer by elimination of small molecules of water

B. With the elimination of small amount of water

C. None of these

D. In a chain without the elimination of water
35. 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of _____________ C?
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A. 250-280

B. 500-600

C. -5

D. 30-Oct

36. Molecular weights of plastics ranges from_______________?
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A. 109 to 1011

B. 1000 to 5000

C. 20000 to 25000

D. 5000 to 1000

37. Buna-S is a _______________ material?
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A. Plastic

B. Rubbery

C. Resinous

D. Fibrous

38. Tyres are made by___________________?
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A. Rotational moulding

B. Injection moulding

C. Extrusion

D. Compression moulding

39. Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex ?
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A. Ammonium alum

B. Potassium alum

C. Both A. & B.

D. Neither A. nor B.

40. Which of the following is not a thermoplastic material ?
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A. Polythene

B. Polystyrene

C. PVC

D. Epoxy polymer
41. Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from ______________ resins?
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A. Urea formaldehyde

B. Epoxy

C. Melamine formaldehyde

D. Phenol formaldehyde

42. A copolymer of vinyl and vinylidene chloride is called_____________________?
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A. Treylene

B. Orlon

C. Dacron

D. Saran
43. Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?
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A. Thiokol

B. Carbon

C. Magnesium

D. Alkylated diphenyl amine
44. The conversion of caprolactam in the above case is about ____________ percent?
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A. 90

B. 25

C. 50

D. 70

45. Glyptal used in the manufacture of paints & lacquers is a _____________ polymer?
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A. Polyacrylonitrile

B. Polyamide

C. Polystyrene

D. Polyester
46. Nylon-6 as compared to nylon 66 has lower ?
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A. Adhesion to rubber

B. Thermal stability

C. Abrasion resistance

D. Hardness

47. Ebonite is a/an___________________?
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A. Unvulcanised raw rubber

B. Highly vulcanised rubber

C. Natural rubber

D. Adhesive

48. Orlan fibre which is used as a wool substitute is __________________?
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A. Poly-methyl-methacrylate (PMMA)

B. A natural polymeric fibre

C. Polyacrylonitrile

D. An amorphous polymer

49. Low pressure Zeigler process of polythene manufacture____________________?
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A. Achieves an yield of 95-98% based on ethylene

B. Employs a pressure of 30 kgf/cm2

C. Produces very low density polythene

D. Does not use any catalyst for polymerisation

50. Condensation polymerisation of _____________ produces Bakelite?
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A. Urea & formaldehyde

B. Phenol & acetaldehyde

C. Propylene

D. Phenol & formaldehyde