Neoprene is
A monomer of rubber
Synthetic rubber
Natural rubber
Vulcanized rubber
Which of the following is not a polymer?
RNA
Oxytocin
Cholesterol
Amylose
Natural rubber is not used in making footwear for polar regions because
Natural rubber becomes soft at temperature lower than 10oC
Natural rubber becomes brittle at temperature lower than 10oC.
Natural rubber melts at temperature lower than 10oC.
Natural rubber becomes stronger at temperature lower than 10oC.
Which of the following structures represents neoprene polymer?
Plexi glass is a commercial name of
Glyptal
Polyacrylonitrile
Polymethyl methacrylate
Polyethyl acrylate
Which of the following is not a synthetic rubber?
Neoprene
SBR
Thiokol
Orlon
Which polymer is used for coating cookware to make them non-sticky?
PET
PAN
Teflon
Perlon
The vulcanised rubber has
High water absorption, resistant to oxidation and good elasticity.
High water absorption, susceptible to oxidation and good elasticity.
Low water absorption, susceptible to oxidation and good elasticity.
Low water absorption, resistance to oxidation and good elasticity.
When condensation product of hexamethylenediamine and adipic acid is heated to 553 K (80o) in an atmosphere of nitrogen for about 4-5 h, the product obtained is
Solid polymer of nylon - 66
Liquid polymer of nylon- 66
Gaseous polymer of nylon-66
Liquid polymer of nylon - 6
Which of the following is a chain growth polymer?
Starch
Nucleic acid
Polystyrene
Protein
