37851. Which of the following is the lowest cost plastic commercially available ?
37852. Potential transformer and current transformer are
37853. Terylene is a/an
37854. Rayon is a __________ fibre.
37855. Commercial production of polypropylene employs __________ polymerisation.
37856. Bakelite (phenol-formaldehyde) resin can not be used as
37857. Softening point of high density polythene is about __________ °C.
37858. Polymerisation of poly functional monomers produces polymers having
37859. Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
37860. Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
37861. Inter-poles are provided to
37862. Polycaprolactum is
37863. Which of the following method is used to control the speed of shunt motor below than its rated speed?
37864. Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
37865. __________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.
37866. Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten
37867. The starting material used for the manufacture of caprolactum is
37868. Nylon 6, 10 which is used for bristles making is superior to nylon 6, 6 due to its lower water absorption capacity, is a/an
37869. Styrene which is a monomer for the production of polystyrene, is commercially produced by the
37870. Branched chain polymers compared to linear polymers have higher
37871. Styrene butadiene rubber is commercially manufactured by
37872. __________ polythene is most prone to stress-cracking
37873. Collapsible tubes for tooth paste are produced by __________ extrusion.
37874. Which of the following is not an elastomer ?
37875. Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
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