Thermoplastic Polymers MCQs – T4Tutorials.com

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1. : At a pressure of which of the following, LDPE is prepared by polymerising ethylene?
(A) 100-200 atmospheres
(B) 1000-5000 atmospheres
(C) 10-100 atmospheres
(D) 2-10 atmospheres

2. : Which of the following is incorrect?
(A) Inert and has excellent chemical resistance, LDPE is chemically
(B) LDPE is flexible and tough
(C) For making films in general packaging, carrier bags etc LDPE is used
(D) For load-bearing applications LDPE has high rigidity and is suitable

3. : In the presence of which of the following the ethylene is polymerised under?
(A) Zeigler Natta catalyst
(B) Supported metal oxide catalyst
(C) Lewis acids catalyst
(D) Friedel crafts catalyst

4. : Which of the following is the softening temperature of HDPE?
(A) 135°C
(B) 200°C
(C) 85°C
(D) 150°C

5. : To make which of the following plasticized PVC is not used?
(A) Baby-pants
(B) Bathroom curtaining
(C) Pipes for drainage
(D) Garden hose

6. : ______ is also known as Lucite.
(A) Polystyrene
(B) Polyvinyl acetate
(C) Perspex
(D) Teflon

7. : Which of the following is the crystallinity of LDPE?
(A) 55%
(B) 10%
(C) 30%
(D) 80-90%

8. : By which of the following polymerisation of styrene, Polystyrene is prepared?
(A) Condensation
(B) Free radical
(C) Anionic
(D) Cationic

9. : Which of the following is incorrect?
(A) PVC is odourless, colourless and non-inflammable
(B) For making bottles for consumable liquids PVC is used
(C) In ethyl chloride PVC has superior chemical resistance but is soluble
(D) PVC has poor resistance to weathering and oil resistance

10. : Which of the following is incorrect?
(A) HDPE has good electrical insulation properties
(B) From odour and toxicity, HDPE is free
(C) For domestic water and gas piping HDPE can be used
(D) Compared to LDPE, HDPE possesses a lower tensile strength

11. : Which of the following is the softening temperature of polystyrene?
(A) 80-100°C
(B) 10-20°C
(C) 30-50°C
(D) 120-150°C

12. : ______ is an application of polystyrene?
(A) For solar collectors Dome-shaped covers
(B) For talcum powder Containers
(C) For printed circuitry Laminates
(D) Insulators for motors

13. : _______ act as a catalyst in the preparation of PVC.
(A) Benzoyl peroxide
(B) Grignard reagent
(C) Potassium amide
(D) Lewis acid

14. : _____ statement is incorrect about Teflon.
(A) It is chemically and dense inert
(B) There are good electrical insulation properties
(C) There is a high density of the order 2.1 to 2.3 gm/cm³
(D) There is a high coefficient of friction

15. : _____ is not an example of thermoplastic?
(A) Vulcanised rubber
(B) Nylon
(C) PVC
(D) Polyester

16. : ______ is used for making chewing gums.
(A) Perspex
(B) Teflon
(C) Polystyrene
(D) Polyvinyl acetate

17. : _____ is an application of Teflon.
(A) Audio cassettes
(B) Combs and brush handles
(C) Optical fibres
(D) Coatings of frying pans

18. : By the process of which of the following polymerisation of ethylene, Polythene is prepared?
(A) Living
(B) Condensation
(C) Free-radical
(D) Addition

19. : Which of the following is thermoplastic?
(A) Insoluble
(B) Amorphous
(C) Cross-linked
(D) Held by a covalent bond

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By: Prof. Dr. Fazal Rehman | Last updated: May 23, 2025

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