23501. Commercial production of polypropylene employs __________ polymerisation.
23502. Bakelite (phenol-formaldehyde) resin can not be used as
23503. ചിത്രകലയെ പരിപോഷിപ്പിച്ച മുഗൾ ചക്രവർത്തി ആരായിരുന്നു? [Chithrakalaye pariposhippiccha mugal chakravartthi aaraayirunnu?]
23504. Softening point of high density polythene is about __________ °C.
23505. Polymerisation of poly functional monomers produces polymers having
23506. Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
23507. Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
23508. Inter-poles are provided to
23509. Polycaprolactum is
23510. Which of the following method is used to control the speed of shunt motor below than its rated speed?
23511. Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
23512. __________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.
23513. 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
23514. The starting material used for the manufacture of caprolactum is
23515. 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
23516. Styrene which is a monomer for the production of polystyrene, is commercially produced by the
23517. Branched chain polymers compared to linear polymers have higher
23518. Styrene butadiene rubber is commercially manufactured by
23519. __________ polythene is most prone to stress-cracking
23520. 49-ാം സമാന്തരരേഖ വേർതിരിക്കുന്ന രാജ്യങ്ങൾ ഏവ? [49-aam samaanthararekha verthirikkunna raajyangal eva?]
23521. Collapsible tubes for tooth paste are produced by __________ extrusion.
23522. Which of the following is not an elastomer ?
23523. Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
23524. When the generator is loaded
23525. Polyvinyl chloride (PVC)
23526. Which of the following is not a condensation polymer ?
23527. Pickout the wrong statement.
23528. The only natural thermoplastic resin, which is a product of animal life is
23529. The percentage of carbon in high speed steel is
23530. Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?
23531. Polymers are
23532. __________ practically possess no elasticity.
23533. The control force employed in an indicating instrument,which can be kept in any position is
23534. Polyesters are manufactured by the polycondensation reaction of
23535. The deflecting control of a moving iron instrument is directly proportional to the
23536. A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of
23537. No-Load current of an Induction motor is approximately
23538. Rain coats are made of
23539. Condensation polymerisation of __________ produces bakelite.
23540. __________ is not a condensation polymer.
23541. Nylon-66 is a polyamide of
23542. Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
23543. Which of the following is not a natural fibre?
23544. Polyurathane can not be used to make
23545. Chatter in an AC relay magnet can be eliminated by using
23546. 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.
23547. Polypropylene compared to polythene is
23548. The rate controlling step in the manufacture of silicone rubber is the