51. Polyurathane can not be used to make
automobile cushion
thermal insulation in refrigerator
coating and adhesive
fibre reinforced plastic (FRP)
✅ The correct answer is option D.
Polymer Technology MCQs
52. The only natural thermoplastic resin, which is a product of animal life is
rosin
shellac
amber
copal
✅ The correct answer is option B.
53. The process involved in converting rubber into a thin sheet or coating it on fabric is called
extrusion
mastication
calendering
vulcanisation
✅ The correct answer is option C.
54. Non sulphonated hard bakelites are not used for making
ion-exchange resins
fountain pen barrels
formica table tops
combs
✅ The correct answer is option A.
55. Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.
-20
50
250
500
✅ The correct answer is option B.
56. Phenol formaldehyde
employs addition polymerisation.
employs condensation polymerisation.
is a monomer.
is an abrasive material.
✅ The correct answer is option B.
57. Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?
Phosphorous
Carbon black
Pine oil
Rosin
✅ The correct answer is option B.
58. Perspex can be used as a substitute of glass. Its monomer is
methyl methacrylate
DMT
butadiene
tetrafluroethylene
✅ The correct answer is option A.
59. Nylon 6 as compared to nylon 6, 6 has lower
abrasion resistance.
thermal stability.
adhesion to rubber.
hardness.
✅ The correct answer is option A.
60. Thermosetting materials
are cross-linked molecules.
soften on application of heat.
are solvent soluble.
none of these.
✅ The correct answer is option A.