Q.1
Which of the following act as a catalyst in the preparation of PVC?
  • a) Lewis acid
  • b) Benzoyl peroxide
  • c) Potassium amide
  • d) Grignard reagent
Q.2
Select the incorrect statement from the following option.
  • a) PVC is colourless, odourless and non-inflammable
  • b) PVC has poor oil resistance and resistance to weathering
  • c) PVC is used for making bottles for consumable liquids
  • d) PVC has superior chemical resistance but is soluble in ethyl chloride
Q.3
The C-Cl dipole makes PVC a polymeric polar molecule.
  • a) True
  • b) False
Q.4
Plasticized PVC is not used for making ____________
  • a) Baby-pants
  • b) Bathroom curtaining
  • c) Pipes for drainage
  • d) Garden hose
Q.5
Which of the following is also known as lucite?
  • a) Teflon
  • b) Polyvinyl acetate
  • c) Polystyrene
  • d) Perspex
Q.6
Which of the following is used for making chewing gums?
  • a) Perspex
  • b) Polyvinyl acetate
  • c) Teflon
  • d) Polystyrene
Q.7
Which of the following statement is incorrect about the Teflon?
  • a) It has high density of the order 2.1 to 2.3 gm/cm3
  • b) It has excellent electrical insulation properties
  • c) It has high coefficient of friction
  • d) It is dense and chemically inert
Q.8
Which of the following is an application of Teflon?
  • a) Coatings of frying pans
  • b) Combs and brush handles
  • c) Audio cassettes
  • d) Optical fibres
Q.9
Polystyrene is prepared by ___________ polymerisation of styrene.
  • a) Condensation
  • b) Free radical
  • c) Anionic
  • d) Cationic
Q.10
The softening temperature of polystyrene is ____________
  • a) 10-20 0C
  • b) 30-50 0C
  • c) 80-100 0C
  • d) 120-150 0C
Q.11
Due to the chain stiffening effect of a benzene ring, polystyrene is hard but brittle.
  • a) True
  • b) False
Q.12
Which of the following is an application of polystyrene?
  • a) Insulators for motors
  • b) Dome-shaped covers for solar collectors
  • c) Laminates for printed circuitry
  • d) Containers for talcum powder
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