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Solution

Neoprene is a polymer of chloroprene(2 – chloro – 1, 3– butadiene).

Which one of the following statement is not true?

In vulcanization the formation of sulphur bridges between different chains make rubber harder and stronger.
Natural rubber has the trans-configuration at every double bond
Buna-S is a copolymer of butadiene and styrene
Natural rubber is a 1, 4 - polymer of isoprene

Solution

Which one of the following polymers is prepared by condensation polymerisation?

Teflon
Natural rubber
Styrene
Nylon-66

Solution

The polymer used in orthopaedic devices and in controlled drug release is

Orlon
PTFE
SBR
PHBV

Solution

The plastic household crockery is prepared by using

melamine and tetrafluoroethane
malonic acid and hexamethyleneamine
melamine and vinyl acetate
melamine and formaldehyde

Solution

Which of the following is currently used as a tyre cord ?

Terylene
Polyethylene
Polypropylene
Nylon - 6

Solution

Nylon tyre cord is made from high tenacity continuous filament yarn by twisting and plying.

Which of the following has been used in the manufacture of non-inflammable photographic films?

Cellulose nitrate
Cellulose xanthate
Cellulose perchlorate
Cellulose acetate

Solution

Cellulose acetate has been used in the manufacture of non inflammable photographic films.

The monomer of polystyrene is

C₂H₅ — CH = CH₂
CH₂ = CHCl
C₆H₅ — CH = CH₂
CH₂ = CHCHO

Solution

The polymer used in making synthetic hair wigs is made up of

CH₂ = CHCl
CH₂ = CHCOOCH₃
C₆H₅CH = CH₂
CH₂ = CH – CH = CH₂

Solution

SARAN, a polymer of vinyl chloride (CH₂ = CHCl) and vinylidene chloride, is used for making synthetic hair wigs.

Which polymer is used for making magnetic recording tapes?

Dacron
Acrilan
Glyptal
Bakelite

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