Polyhexamethylene adipimide is also known as
Polyhexamethylene adipimide is also known as
Contact lenses for eyes are made of perspex, which is nothing but
Contact lenses for eyes are made of perspex, which is nothing but
Lavatory cisterns are normally made of
Lavatory cisterns are normally made of
A copolymer is formed by the combination of two or more monomer molecules
A copolymer is formed by the combination of two or more monomer molecules
Condensation polymerisation of __________ produces bakelite.
Condensation polymerisation of __________ produces bakelite.
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an
Maximum consumption of polymers is in
Maximum consumption of polymers is in
Molecular weights of plastics ranges from
Molecular weights of plastics ranges from
Neoprene is rendered non-inflammable, because of
Neoprene is rendered non-inflammable, because of
Styrene butadiene rubber (SBR) is never used for making
Styrene butadiene rubber (SBR) is never used for making
Vinyl flooring is done using __________ sheets.
Vinyl flooring is done using __________ sheets.
Polystyrene is a light, transparent, thermoplastic material used for making
Polystyrene is a light, transparent, thermoplastic material used for making
Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ?
Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ?
Which of the following has the weakest intermolecular forces?
Which of the following has the weakest intermolecular forces?
Elastomers are
Elastomers are
Dacron is a/an
Dacron is a/an
Alkyd resin is a/an
Alkyd resin is a/an
Trade name of __________ is neoprene.
Trade name of __________ is neoprene.
Plasticisers are added to synthetic plastics to
Plasticisers are added to synthetic plastics to
Most commonly used rubber vulcanisation agent is
Most commonly used rubber vulcanisation agent is
The monomer of natural rubber is
The monomer of natural rubber is
__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.
__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.
__________ polythene is most prone to stress-cracking
__________ polythene is most prone to stress-cracking
The major component of acrylic fibres is
The major component of acrylic fibres is
Styrene butadiene rubber (SBR) as compared to natural rubber has
Styrene butadiene rubber (SBR) as compared to natural rubber has
Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
Which of the following is the lowest cost plastic commercially available?
Which of the following is the lowest cost plastic commercially available?
The conversion of caprolactum in the above case is about __________ percent.
The conversion of caprolactum in the above case is about __________ percent.
The process involved in converting rubber into a thin sheet or coating it on fabric is called
The process involved in converting rubber into a thin sheet or coating it on fabric is called
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.
90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.
90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.
Cellulose content in bomboo fibre is about __________ percent.
Cellulose content in bomboo fibre is about __________ percent.
Ebonite is a/an
Ebonite is a/an
Thermocole (expanded polystyrene) is not used for
Thermocole (expanded polystyrene) is not used for
All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic
All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic
Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of
Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of
Buna-N is also called
Buna-N is also called
Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres.
Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres.
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.
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.
The starting material used for the manufacture of caprolactum is
The starting material used for the manufacture of caprolactum is
SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at
SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at
Starting material for the production of butadiene in India is
Starting material for the production of butadiene in India is
Nitrile rubber is produced by the polymerisation of
Nitrile rubber is produced by the polymerisation of
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.
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.
Thermosetting resins/polymers as compared to thermoplastic ones are
Thermosetting resins/polymers as compared to thermoplastic ones are
Non sulphonated hard bakelites are not used for making
Non sulphonated hard bakelites are not used for making
A copolymer of vinyl and vinylidine chloride is called
A copolymer of vinyl and vinylidine chloride is called
Polystyrene is a __________ plastic at room temperature.
Polystyrene is a __________ plastic at room temperature.
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.
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.
Polymerisation process in which two or more monomers of chemically different nature take part is called
Polymerisation process in which two or more monomers of chemically different nature take part is called
Which of the following is a natural polyamide fibre.
Which of the following is a natural polyamide fibre.
Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
Which of the following polymers belong to the class of formaldehyde resin?
Which of the following polymers belong to the class of formaldehyde resin?
Caprolactum, a raw material for the manufacture of nylon-6, is produced from
Caprolactum, a raw material for the manufacture of nylon-6, is produced from
Polyesters are manufactured by the polycondensation reaction of
Polyesters are manufactured by the polycondensation reaction of
Benzoyl chloride is not used as a catalyst in the manufacture of
Benzoyl chloride is not used as a catalyst in the manufacture of
__________ is not a polyester fibre.
__________ is not a polyester fibre.
Main constituent of cotton fibre is
Main constituent of cotton fibre is
The synthetic fibres produced from __________ are known as rayon.
The synthetic fibres produced from __________ are known as rayon.
Buna-S is also called
Buna-S is also called
Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces
Cross linked polymers are
Cross linked polymers are
__________ is a thermosetting plastic.
__________ is a thermosetting plastic.
Orlan fibre which is used as a wool sub stitute is
Orlan fibre which is used as a wool sub stitute is
Polymethyl methacrylate, which is an acrylic resin, is also called
Polymethyl methacrylate, which is an acrylic resin, is also called
Cellulose is the main contituent of most __________ fibres.
Cellulose is the main contituent of most __________ fibres.
Thermosetting polymers as compared to thermoplastic polymers
Thermosetting polymers as compared to thermoplastic polymers
Dacron (or terylene) fibres as compared to nylon fibres have
Dacron (or terylene) fibres as compared to nylon fibres have
Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.
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
__________ is an addition polymer
__________ is a homopolymer.
__________ is a homopolymer.
Low density polythene as compared to high density polythene is
Low density polythene as compared to high density polythene is
Acrylonitrile is mainly used in the __________ industry.
Acrylonitrile is mainly used in the __________ industry.
__________ is a natural fibre.
__________ is a natural fibre.
Most of the plastics are safe to be used upto a maximum temperature of __________ °C.
Most of the plastics are safe to be used upto a maximum temperature of __________ °C.
Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
Celluloid is
Celluloid is
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
__________ scrap can be recycled & reutilised.
__________ scrap can be recycled & reutilised.
Flexible foam (for mattresses) are usually made of
Flexible foam (for mattresses) are usually made of
The physical state in which polymers exist is
The physical state in which polymers exist is
Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
Polyurathane can not be used for making
Polyurathane can not be used for making
Size range of polymer molecules varies from __________ metre.
Size range of polymer molecules varies from __________ metre.
__________ is a copolymer.
__________ is a copolymer.
Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
Bakelite is a/an
Bakelite is a/an
Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are
Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are
Viscosity of a polymer solution or melt
Viscosity of a polymer solution or melt
Polyurathane can not be used to make
Polyurathane can not be used to make
Silicone resins, which are highly water repellant and has good heat resistance can not be used
Silicone resins, which are highly water repellant and has good heat resistance can not be used
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?
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?
Neoprene is chemically known as
Neoprene is chemically known as
Identify the group in which all the polymers mentioned can be used to make fibres.
Identify the group in which all the polymers mentioned can be used to make fibres.
Hot drink (e.g, tea) cups are usually made of
Hot drink (e.g, tea) cups are usually made of
Collapsible tubes for tooth paste are produced by __________ extrusion.
Collapsible tubes for tooth paste are produced by __________ extrusion.
