NEET

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

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

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

The plastic household crockery is prepared by using

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

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?

Solution

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

The monomer of polystyrene is

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

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?

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