A. Vulcanise it
B. Protect it from deterioration on exposure to air
C. Make it non-inflammable
D. Make it thermosetting
Correct Answer: Protect it from deterioration on exposure to air ✔
Last Updated: March 08, 2019
Related MCQs
- Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C?
- Plastic articles are normally produced by __________ moulding?
- Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is__________?
- Polycaprolactam (Nylon – 6) is produced by the condensation polymerisation of caprolactam at 240-280°C in which the conversion of caprolactam is about __________ percent?
- Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%) ?
- The physical state in which polymers exist is__________?
- Alkyd resin is a/an__________?
- Ion exchange resins are made of__________?
- Bristles of tooth brushes are made of__________?
- Most of the plastics are safe to be used upto a maximum temperature of __________ °C?
- Contact lenses for eyes are made of Perspex, which is nothing but__________?
- Which of the following is not a polyolefin ?
- Vulcanisation of raw rubber makes it__________?
- Poly-methyl-methacrylate, which is an acrylic resin, is also called __________?
- Alkyd resin cannot be used for making__________?
- Buna-N is also called__________?
- Molecular weight of polymers are in the range of__________?
- Nitrile rubber is produced by the polymerisation of__________?
- Epoxy resin is__________?
- Lavatory cisterns are normally made of __________?
- __________ is a copolymer ?
- Low density polythene as compared to high density polythene is__________?
- Hot drink (e.g., tea) cups are usually made of __________?
- The inter particle forces between linear chains in nylon-66 are __________ bonds?
- Polypropylene is preferred to polythene, because the former is __________?
- Polystyrene is a light, transparent, thermoplastic material used for making __________?
- Rayon is superior to cotton in making gauge for wound treatment, because rayon__________?
- The repeating units of PTFE are__________?
- Condensation polymerisation is not involved in the manufacture of__________?
- Linear polymers are normally__________?
- __________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate?
- Benzoyl chloride is not used as a catalyst in the manufacture of__________?
- Visco-elastic behaviour exhibited by plastics is a __________ like behaviour?
- Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800 ?
- __________ tubes are good substitute for human blood vessels on heart by-pass operation?
- Vulcanisation of rubber__________?
- Trade name of __________ is neoprene?
- Which of the following low molecular weight (<104), soft & waxy polymer is used in „chewing gum‟ ?
- Dacron is a/an__________?
- Dacron (or Treylene) fibres as compared to nylon fibres have__________?
- The major component of acrylic fibers is__________?
- Zeigler – Natta catalyst (AlR3 – AlCl3) is used in the polymerisation of__________?
- __________ fibres are made of polyamides?
- __________ is produced by polymerisation of chloroprene?
- Thiokol is nothing but__________?
- Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding__________?
- Neoprene is a__________?
- Polymerisation of poly functional monomers produces polymers having__________?
- β – glucose is the monomer of__________?
- __________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR?
- __________ is a homopolymer?