Practice Test: Question Set - 04
1. Identify the group in which all the polymers mentioned can be used to make fibres.
- (A) Butadiene copolymers, Polyamides,
Urea-formaldehyde
- (B) Cellulose derivatives, Polyisoprene,
Polyethylene
- (C) Cellulose derivatives, Polyamides, Polyurethane
- (D) Polypropylene, Poly vinyl chloride, Silicon
2. Nylon-6 as compared to nylon 66 has lower
- (A) Abrasion resistance
- (B) Thermal stability
- (C) Adhesion to rubber
- (D) Hardness
3. 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?
- (A) Ammonium alum
- (B) Potassium alum
- (C) Both ‘a’ & ‘b’
- (D) Neither ‘a’ nor ‘b’
4. Which of the following is not a thermoplastic material?
- (A) Epoxy polymer
- (B) PVC
- (C) Polystyrene
- (D) Polythene
5. Which of the following types of polymers has the strongest inter particle forces?
- (A) Elastomers
- (B) Fibres
- (C) Thermoplastics
- (D) Thermosetting polymers
6. Addition polymerisation is not involved in the manufacture of
- (A) Low density polythene
- (B) Poly vinyl chloride
- (C) Polystyrene
- (D) Polyhexamethylene adipamide
7. Mastication of rubber means
- (A) Its softening
- (B) A treatment to retard its deterioration due to oxidation
- (C) Improving its curing rate
- (D) Depression of its freezing point
8. Amino resins are used in paper treatment to improve its
- (A) Wet tear and bursting strength
- (B) Folding endurance
- (C) Wet rub resistance
- (D) All (a), (b) & (c)
9. Polythene is a/an
- (A) Addition polymerisation product
- (B) Condensation polymerisation product
- (C) Thermosetting material
- (D) None of these
10. Addition of stabiliser during PVC manufacture is done to
- (A) Improve its impact strength
- (B) Improve its elasticity
- (C) Reduce the melt viscosity & glass transition temperature
- (D) Prevent its thermal degradation
11. Neoprene is the trade name of
- (A) Polyurethane
- (B) Phenol formaldehyde
- (C) Polychlorophrene
- (D) Styrene butadiene rubber (SBR)
12. __________ are produced by reacting polybasic acid (e.g. Phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
- (A) Unsaturated polyester
- (B) Alkyd resins
- (C) Saturated polyester
- (D) Amino resins
13. __________ polymer is used for making unbreakable crockery.
- (A) Thermoplastic
- (B) Melamine
- (C) Addition
- (D) None of these
14. Maximum consumption of polymers is in
- (A) Electrical insulation
- (B) Toys making
- (C) Coating and films
- (D) Packaging
15. The synthetic fibres produced from __________ are known as rayon.
- (A) Lignin
- (B) Cellulose
- (C) Polyamides
- (D) Ethylene glycol
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