Q. Commercial production of polypropylene employs __________ polymerisation.

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Q. Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten

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Q. Styrene butadiene rubber (SBR) is

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Q. Polycaprolactum is

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Q. Dacron is a

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Q. Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.

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Q. __________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.

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Q. 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

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Q. The starting material used for the manufacture of caprolactum is

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Q. 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

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Q. Styrene which is a monomer for the production of polystyrene, is commercially produced by the

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Q. Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their

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Q. Which of the following is not a natural fibre?

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Q. Polyurathane can not be used to make

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Q. Terylene is

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Q. Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties.

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Q. Bakelite (phenol-formaldehyde) resin can not be used as

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Q. Adipic acid is an intermediate in the manufacture of

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Q. Softening point of high density polythene is about __________ °C.

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Q. Polymerisation of poly functional monomers produces polymers having

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