Which of the following is used in vulcanization rubber?
SF6
CF4
CI2F2
C2F2
The synthetic polymer which resembles natural rubber is
neoprene
chloroprene
glyptal
nylon
Which of the following is a biodegradable polymer?
Cellulose
Polythene
Polyvinyl chloride
Nylon - 6
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, resistance to oxidation and good elasticity.
Which of the following is not a synthetic rubber?
Neoprene
SBR
Thiokol
Orlon
Which of the following structures represents neoprene polymer?
Polyethylene is a resin obtained by polymerization of
styrene
isoprene
ethylene
butadiene
Which polymer is used for coating cookware to make them non-sticky?
PET
PAN
Teflon
Perlon
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 not a thermoplastic?
Polystyrene
Nylon- 66
