Paper like thin plastic articles can be produced by

Polycaprolactum is also known as

Main constituent of natural rubber is

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.

Low density polythene as compared to high density polythene is

Which of the following is stretched into fibres ?

Which of the following is not a polyolefin ?

Zeigler process

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

Polyvinyl alcohol is used as a

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.

Nylon 6 as compared to nylon6 has lower

Polyhexamethylene adipimide is also known as

__________ scrap can be recycled & reutilised.

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

Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces

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

Thermosplastic materials

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

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

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 ?

Synthetic rubber

Cellulose content in bomboo fibre is about __________ percent.

Unbreakable crockeries are made from __________ polymers.

Thermal pyrolysis of ethylene dichloride produces

Dacron is a/an

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

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

Polyvinyl acetate is never used for making

Pick out the wrong statement.

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

Poly tetra flouro ethylene (PTFE) is known as

Vulcanisation of rubber does not increase its

Which of the following is a copolymer ?

__________ is an addition polymer

Branched chair polymers as compared to linear polymers have

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

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

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

Which of the following has the weakest intermolecular forces ?

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

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 ?

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

Which of the following is not the commercial name of polymethylmethacrylate (PMMA) ?

Vulcanisation of rubber

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

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

Branched chain polymers compared to linear polymers have higher

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

Vulcanisation of rubber does not increase its