Polymer Technology

Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are

Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces

Polystyrene is a __________ plastic at room temperature.

__________ is a thermosetting plastic.

Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.

__________ is an addition polymer

The synthetic fibres produced from __________ are known as rayon.

__________ is a natural fibre.

Plasticisers are added to synthetic plastics to

Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically

Thermocole (expanded polystyrene) is not used for

Low density polythene as compared to high density polythene is

Dacron is a

Dacron is a/an

Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an

__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).

Collapsible tubes for tooth paste are produced by __________ extrusion.

Nitrile rubber is produced by the polymerisation of

Cellulose content in bomboo fibre is about __________ percent.

Buna-N is also called

Commercial production of polypropylene employs __________ polymerisation.

Amino resins are used in paper treatment to improve its

Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

Phenol formaldehyde

Phthalic anhydride is used

Pick out the wrong statement.

Polycaprolactum is

Polycaprolactum is nothing but

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.

__________ is produced by polymerisation of chloroprene.

Which of the following additives are added to plastics to make it impervious to X-rays?

Mastication of rubber means

Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.

Branched chair polymers as compared to linear polymers have

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

Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber?

Nylon-6 as compared to nylon-66 is

Buna-S is a __________ material.

Density of high density polythene is about __________ gm/c.c.

Identify the group in which all the polymers mentioned can be used to make fibres.

Acrylonitrile is mainly used in the __________ industry.

Neoprene is rendered non-inflammable, because of

Molecular weights of plastics ranges from

Elastomers are

Non sulphonated hard bakelites are not used for making

Polyhexamethylene adipimide is also known as

Polymerisation process in which two or more monomers of chemically different nature take part is called

Cellulose is the main contituent of most __________ fibres.

Neoprene is chemically known as

Rain coats are made of

Rayon is a __________ fibre.

Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as

In condensation polymerisation as compared to addition polymerisation

Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800?

Terylene is a/an

Styrene butadiene rubber (SBR) is

In nylon-6, the number 6 represents the total number of

Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used

Adipic acid is an intermediate in the manufacture of

Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.

Epoxy resin is

Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is

Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?

Phenol formaldehyde is produced by condensation polymerisation. It is also known as

Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin.

Epoxy resins (i.e., epoxide polymers)

Condensation of bisphenol A with phosgene produces __________ which possess very good heat resistance.

Polyvinyl acetate is never used for making

Polymethyl methacrylate (PMMA) is known as

Which of the following is a natural polyamide fibre.

__________ is not a polyester fibre.

The starting material used for the manufacture of caprolactum is

__________ polythene is most prone to stress-cracking

Viscosity of a polymer solution or melt

Contact lenses for eyes are made of perspex, which is nothing but

Most commonly used rubber vulcanisation agent is

Hot drink (e.g, tea) cups are usually made of

90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.

Most of the plastics are safe to be used upto a maximum temperature of __________ °C.

__________ practically possess no elasticity.

Nylon 6 as compared to nylon 6, 6 has lower

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

Branched chain polymers compared to linear polymers have higher

The rate controlling step in the manufacture of silicone rubber is the

Tyres are made by

Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?

Viscose rayon is

Vulcanisation of rubber

Which of the following is an inorganic polymer?

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?

Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding

Nylon-66 compared to nylon-6 has

Which of the following is not a natural fibre?

__________ tubes are good substitude for human blood vessels onrheart by-pass operation.

Polycaprolactum is also known as

Which of the following low molecular weight (< 10 4 ), soft & waxy polymer is used in chewing gum?

Polypropylene is preferred to polythene, because the former is

Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent.

Unbreakable crockeries are made from __________ polymers.

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

Polymers are

Polythene is a/an

Polyvinyl alcohol is used as a

Polyvinyl chloride (PVC)

Glyptal used in the manufacture of paints & lacquers is a __________ polymer.

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

__________ polymer is used for making unbreakable crockery.

Poly Vinyl chloride (PVC) is a __________ material.

Pick out the wrong statement regarding the solubility characteristics of high polymers.

__________ is a copolymer.

The conversion of caprolactum in the above case is about __________ percent.

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

The monomer of natural rubber is

Caprolactum, a raw material for the manufacture of nylon-6, is produced from

Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.

Polyesters are manufactured by the polycondensation reaction of

Which of the following has the weakest intermolecular forces?

Silicone resins, which are highly water repellant and has good heat resistance can not be used

Ebonite is a/an

Alkyd resin is a/an

Trade name of __________ is neoprene.

SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at

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

Polyurathane can not be used for making

Thermosetting resins/polymers as compared to thermoplastic ones are

Thermosetting polymers as compared to thermoplastic polymers

Which of the following is the lowest cost plastic commercially available?

Polystyrene is a light, transparent, thermoplastic material used for making

The physical state in which polymers exist is

Pickout the wrong statement.

The monomer for the production of neoprene rubber is

Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of

In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

Which of the following is not a polyolefin?

Which of the following is not an elastomer?

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

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is

Polymerisation of poly functional monomers produces polymers having

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

Rayon is superior to cotton in making gauge for wound treatment, because rayon

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

Plastic tubes & pipes are generally made by __________ moulding.

Polypropylene compared to polythene is

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

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

Zeigler process

β - glucose is the monomer of

A copolymer is formed by the combination of two or more monomer molecules

Orlan fibre which is used as a wool sub stitute is

Zeigler - Natta catalyst (AlR 3 - AlCl 3 ) is used in the polymerisation of

Size range of polymer molecules varies from __________ metre.

__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.

A copolymer of vinyl and vinylidine chloride is called

Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.

Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?

Styrene butadiene rubber (SBR) is never used for making

Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are

Poly tetra flouro ethylene (PTFE) is known as

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

Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the

Liners of bags are usually made of

Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.

Styrene butadiene rubber is commercially manufactured by

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

Which of the following is not a condensation polymer?

Bristles of tooth brushes are made of

Condensation polymerisation of __________ produces bakelite.

Polymethyl methacrylate, which is an acrylic resin, is also called

Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres.

__________ scrap can be recycled & reutilised.

Lavatory cisterns are normally made of

Which of the following polymers belong to the class of formaldehyde resin?

Dacron (or terylene) fibres as compared to nylon fibres have

Maximum consumption of polymers is in

Vinyl flooring is done using __________ sheets.

All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic

Which of the following is a copolymer?

In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer?

The main use of butadiene is

Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is

Thermoplastic resins usually

Thermosetting materials

Thermosplastic materials

Thiokol is nothing but

Properties of a polymer is affected by the

Which of the following polymers has the tendency of decomposing before melting?

Thermal pyrolysis of ethylene dichloride produces

The monomer of poly vinyl chloride (PVC) is

Molecular weight of polymers are in the range of

Vulcanisation of rubber does not increase its

__________ fibres are made of polyamides.

Gutta parcha rubber is

Which of the following is an elastomer?

The repeating units of PTFE are

Thermosetting plastic materials

Which of the following polymers shows the highest anti-tacking properties?

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

Flexible plastic pipes are made of

Synthetic polymer produced by using terephthalic acid and ethylene glycol is

The organic acid monomer in nylon 66 is

Paper like thin plastic articles can be produced by

Pick out the correct statement.

Which of the following is not a natural polymer?

Which of the following is stretched into fibres?

Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its

Valcunisation of rubber decreases its

Silicone is a/an

Alkyd resin can not be used for making

Which of the following polymers is used for making a non stick coating on frying pans?

Synthetic rubber

Which of the following is generally not used as eord for synthetic rubber tyre casing?

Teflon is

Terylene is

Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces

Transistor parts and refrigerator components are normally made of

Polyvinyl chloride (PVC) is

Ion exchange resins are made of

Which of the following types of polymers has the strongest inter particle forces?

Orion is

__________ moulding is used for shaping of thermosetting plastics exclusively.

Which of the following is not a polymer of two monomers?

Catalyst used in the production of high density polythene by low pressure Ziegler process is

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

Addition of stabiliser during PVC manufacture is done to

Addition polymerisation is not involved in the manufacture of

Condensation polymerisation is not involved in the manufacture of

In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

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

Polycondensation reaction of polymerisation

The only natural thermoplastic resin, which is a product of animal life is

Cation exchange resins used in water treatment is made from __________ resin.

__________ is not a condensation polymer.

Benzoyl chloride is not used as a catalyst in the manufacture of

Celluloid is

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

Styrene butadiene rubber (SBR) as compared to natural rubber has

The major component of acrylic fibres is

Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.

Main constituent of cotton fibre is

Cross linked polymers are

Starting material for the production of butadiene in India is

Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.

Density of low density polythene is about __________ gm/c.c.

Neoprene is a

Neoprene is the trade name of

Which of the following is generally not drawn into fibre?

In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?

Automobile steering wheels are normally made of

Which of the following is not a thermoplastic material?

Which of the following is not present in bagasse fibre?

Main constituent of natural rubber is

Diphenylamine is added to rubber to

Nylon-6 is a

Nylon-6 is manufactured from

The inter particle forces between linear chains in nylon-66 are __________ bonds.

Nylon-66 is a polyamide of

Nylon-66 is manufactured from

Polymerisation product of C 2 F 4 (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called

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

Low pressure Zeigler process of polythene manufacture

Plastic articles are normally produced by __________ moulding.

Polyurathane can not be used to make

Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m 2 . Which of the following polymers has the maximum film elongation (of the order of 100%)?

Flexible foam (for mattresses) are usually made of

Bakelite is

Bakelite is a/an

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

Buna-S is also called

In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres.

__________ is a homopolymer.

Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.

In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.

Vulcanisation of raw rubber makes it

Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?

Perspex can be used as a substitute of glass. Its monomer is

Starting material for the production of SBR is

Which of the following polymers does not belong to the class of polyacrylate polymer?

__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its

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

Linear polymers are normally