Pick out the wrong statement regarding the solubility characteristics of high polymers.
A copolymer of vinyl and vinylidine chloride is called
Epoxy resins (i.e., epoxide polymers)
Which of the following is not a natural fibre?
Polyurathane can not be used to make
Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
__________ is a copolymer.
Epoxy resin is
Phenol formaldehyde
Polyesters are manufactured by the polycondensation reaction of
Styrene butadiene rubber (SBR) is
Adipic acid is an intermediate in the manufacture of
Softening point of high density polythene is about __________ °C.
__________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.
Which of the following is the lowest cost plastic commercially available ?
Polycaprolactum (Nylon -is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent.
Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.
__________ is not a condensation polymer.
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?
Terylene is
Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties.
Contact lenses for eyes are made of perspex, which is nothing but
Liners of bags are usually made of
Which of the following is an inorganic polymer ?
Polystyrene is a light, transparent, thermoplastic material used for making
Polyvinyl chloride (PVC)
Which of the following is not a condensation polymer ?
Thermosetting materials
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of
Polycaprolactum is
Dacron is a
Polymerisation of poly functional monomers produces polymers having
Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten
Thermosetting plastic materials
Viscose rayon is
Hot drink (e.g, tea) cups are usually made of
Nylon-is a polyamide of
Polymers are
The repeating units of PTFE are
Poly Vinyl chloride (PVC) is a __________ material.
__________ moulding is used for shaping of thermosetting plastics exclusively.
Linear polymers are normally
Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used
Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.
The inter particle forces between linear chains in nylon-are __________ bonds.
Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
The starting material used for the manufacture of caprolactum is
Nylonwhich is used for bristles making is superior to nylon6 due to its lower water absorption capacity, is a/an
Terylene is a/an
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