Polymer Advanced Technology MCQ - Set 07 - ObjectiveBooks

Polymer Advanced Technology MCQ - Set 07

Practice Test: Question Set - 07

1. Most commonly used rubber vulcanization agent is
    (A) Sulphur
    (B) Bromine
    (C) Platinum
    (D) Alumina

2. Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
    (A) 1-1000
    (B) 1000-1500
    (C) 1500-2000
    (D) 2000-2500

3. Liners of bags are usually made of
    (A) Polythene
    (B) PVC
    (C) Polypropylene
    (D) Polyesters

4. Bakelite is a/an
    (A) Addition polymer
    (B) Elastomer
    (C) Thermoplastic
    (D) None of these

5. __________ is an addition polymer
    (A) Nylon
    (B) Bakelite
    (C) Polythene
    (D) None of these

6. Density of high density polythene is about __________ gm/c.c.
    (A) 1.18
    (B) 1.05
    (C) 0.95
    (D) 0.99

7. Which of the following is an elastomer?
    (A) Thiokol
    (B) Phenol formaldehyde
    (C) Urea formaldehyde
    (D) Polystyrene

8. Non sulphonated hard bakelites are not used for making
    (A) Ion-exchange resins
    (B) Fountain pen barrels
    (C) Formica table tops
    (D) Combs

9. Plastic tubes & pipes are generally made by __________ moulding.
    (A) Injection
    (B) Transfer
    (C) Extrusion
    (D) Compression

10. The organic acid monomer in nylon-66 is
    (A) Sebacic acid
    (B) Terephthalic acid
    (C) Adipic acid
    (D) Benzoic acid

11. Diphenylamine is added to rubber to
    (A) Vulcanize it
    (B) Protect it from deterioration on exposure to air
    (C) Make it non-inflammable
    (D) Make it thermosetting

12. Which of the following polymers is used for making a non stick coating on frying pans?
    (A) Bakelite
    (B) Teflon
    (C) Perspex
    (D) PVC

13. Temperature maintained in the emulsion polymerization reactor for PVC manufacture is about __________ ° C.
    (A) -20
    (B) 50
    (C) 250
    (D) 500

14. Which of the following polymers has the tendency of decomposing before melting?
    (A) Polystyrene
    (B) Nylon
    (C) PVC
    (D) None of these

15. Plastic articles are normally produced by __________ moulding.
    (A) Green sand
    (B) Injection
    (C) Shell
    (D) Dry sand

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