Q. __________ is normally used for the manufacture of refrigerator components and transistor parts.

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Q. Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser ?

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Q. Bakelite is

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Q. Poly tetra flouro ethylene (PTFE) is known as

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Q. Thermosetting resins/polymers as compared to thermoplastic ones are

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Q. The generic chemical name for the class of polymers which are commerically known as nylons is

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Q. Polycondensation reaction of polymerisation

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Q. Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but

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Q. Which of the following is a polymer of hexamethylene diamine and adipic acid ?

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Q. Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is

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Q. The process involved in converting rubber into a thin sheet or coating it on fabric is called

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Q. Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?

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Q. Nylon-66 is manufactured from

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Q. In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher

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Q. Vulcanisation of rubber does not increase its

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Q. Which of the following is a copolymer ?

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Q. Styrene butadiene rubber (SBR) is never used for making

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Q. Cross linked polymers are

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Q. Thermosetting polymers as compared to thermoplastic polymers

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Q. The monomer of natural rubber is

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