Tag: polymer
Questions Related to polymer
Teflon and Neoprene are the example of:
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copolymer
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monopolymer
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homopolymer
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condensation polymer.
Teflon is homopolymer of monomeric units of tetra-fluoro-ethene
Which of the following sets contain only addition homopolymers?
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Polythene, Natural rubber, Cellulose
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Nylon, Polyester, Melamine resin
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Teflon, Bakelite, Orlon
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Neoprene, PVC, Polythene
On the basis of mode of polymerization, polymers can be classified into two types:-
On complete hydrogenation, natural rubber produces:
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ethylene-propylene copolymer
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vulcanized rubber
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polypropylene
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polybutylene
Natural rubber forms due to polymerisation of isoprene and on hydrogenation provide a polymer of the ethylene-propylene copolymer.
Polymerisation in which two or more chemically different monomers take part is called
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addition polymerisation
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copolymerisation
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chain polymerisation
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homopolymerisation
Addition polymerisation - In this type of polymerisation, the molecules of the same monomer or different monomers add together on a large scale to form a polymer.
Copolymerisation - Copolymerisation is a polymerisation reaction in which a mixture of more than one monomeric species is allowed to polymerise to form a copolymer.
Chain polymerisation - Chain polymerisation or chain growth polymerisation is a polymerisation technique, where unsaturated monomer molecules add on to the active site on a growing polymerisation one at a time.
Homopolymerisation - Homopolymerisation is the polymerisation of a single type of monomer to form a homopolymer.
Buna-S is a copolymer of:
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styrene and $1,:3$ - butadiene
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styrene and ethylene
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$1,:3$ - butadiene and ethylene
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$1,: 3$ - butadiene and acrylonitrile
Buna-S is formed from styrene and $1,:3$ - butadiene.
The reaction is shown below:
$nCH _2=CH-CH=CH _2 + nC _6H _5CH=CH _2 \rightarrow -(CH _2-CH=CH-CH _2-CH _2-CH(C _6H _5)) _n-$
Which one of the following is an example of co-polymer ?
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Buna - S
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Teflon
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PVC
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Polypropylrnr
Copolymer is a polymer made of two or more than two different monomers.
Which of the following is not addition copolymer?
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Saran
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Vinyon
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SBR
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PVC
Which one is not a synthetic rubber?
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Buna -S
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Homopolymers of 1, 3-butadiene derivative
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PVC
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Copolymer of 1, 3-butadiene
Caprolactam is the monomeric unit of :
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Nylon 6, 6
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Nylon 2-Nylon 6
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Nylon 6
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None of these
Polyethylene is a/an:
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random co-polymer
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homopolymer
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alternate co-polymer
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cross-linked co-polymer