37652. Most commonly used rubber vulcanisation agent is
37653. Which of the following is not the commercial name of polymethylmethacrylate (PMMA) ?
37654. Density of low density polythene is about __________ gm/c.c.
37655. In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is
37656. Gutta parcha rubber is
37657. The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is
37658. Polyhexamethylene adipimide is also known as
37659. The decibel is measure of
37660. __________ is normally used for the manufacture of refrigerator components and transistor parts.
37661. 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 ?
37662. Non-sinusoidal waveforms are made up of
37663. Poly tetra flouro ethylene (PTFE) is known as
37664. Thermosetting resins/polymers as compared to thermoplastic ones are
37665. The generic chemical name for the class of polymers which are commerically known as nylons is
37666. Polycondensation reaction of polymerisation
37667. Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but
37668. Which of the following is a polymer of hexamethylene diamine and adipic acid ?
37669. 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
37670. There are no transients in pure resistive circuits because they
37671. Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?
37672. Nylon-66 is manufactured from
37673. Thermosplastic materials
37674. Polyvinyl acetate is never used for making
37675. Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is
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