Rayon is a __________ fibre.
Pick out the wrong statement.
Polyurathane can not be used for making
Polypropylene compared to polythene is
Low pressure Zeigler process of polythene manufacture
Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are
Bristles of tooth brushes are made of
Alkyd resin can not be used for making
The monomer for the production of neoprene rubber is
A copolymer is formed by the combination of two or more monomer molecules
Valcunisation of rubber decreases its
Plastic articles are normally produced by __________ moulding.
Molecular weight of polymers are in the range of
Styrene which is a monomer for the production of polystyrene, is commercially produced by the
Commercial production of polypropylene employs __________ polymerisation.
The rate controlling step in the manufacture of silicone rubber is the
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
Which of the following is an elastomer ?
Polystyrene is a __________ plastic at room temperature.
Amino resins are used in paper treatment to improve its
Starting material for the production of butadiene in India is
Thermoplastic resins usually
Thermocole (expanded polystyrene) is not used for
The physical state in which polymers exist is
Buna-S is also called
Main constituent of cotton fibre is
Orlon is
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an
Diphenylamine is added to rubber to
Which of the following is not a thermoplastic material ?
Vulcanisation of raw rubber makes it
Nitrile rubber is produced by the polymerisation of
Starting material for the production of SBR is
Lavatory cisterns are normally made of
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 ?
Celluloid is
The synthetic fibres produced from __________ are known as rayon.
Which of the following is a copolymer ?
Orlan fibre which is used as a wool sub stitute is
Plasticisers are added to synthetic plastics to
Which of the following low molecular weight (<104 ), soft & waxy polymer is used in chewing gum ?
The main use of butadiene is
Automobile steering wheels are normally made of
Styrene butadiene rubber (SBR) as compared to natural rubber has
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to
Density of high density polythene is about __________ gm/c.c.
Nylon-6 is manufactured from
Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its
Please disable the adBlock and continue. Thank you.