Neoprene is the trade name of
Cellulose is the main contituent of most __________ fibres.
Buna-S is a __________ material.
Mastication of rubber means
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?
Which of the following polymers has the tendency of decomposing before melting ?
Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.
Vinyl flooring is done using __________ sheets.
Caprolactum, a raw material for the manufacture of nylon-is produced from
The organic acid monomer in nylonis
Trade name of __________ is neoprene.
__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.
Zeigler - Natta catalyst (AlR3 - AlCl3) is used in the polymerisation of
Polymethyl methacrylate (PMMA) is known as
of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.
Which of the following polymers belong to the class of formaldehyde resin ?
Which of the following is generally not used as eord for synthetic rubber tyre casing ?
Thiokol is nothing but
The monomer of poly vinyl chloride (PVC) is
Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is
SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at
__________ tubes are good substitude for human blood vessels onrheart by-pass operation.
Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces
Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
__________ is not a polyester fibre.
Transistor parts and refrigerator components are normally made of
Dacron (or terylene) fibres as compared to nylon fibres have
Buna-S is also known as
Dacron is a/an
Neoprene is a
Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.
Neoprene is chemically known as