Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces________________?
A. Nylon-6
B. Dacron
C. Polyester
D. PVC
Polymer Technology
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces________________?
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces________________?
A. Epoxy resin
B. Polyamide
C. Alkyd resin
D. Phenolic resin
Neoprene is chemically known as _________________?
Neoprene is chemically known as _________________?
A. Polybutadiene
B. Styrene butadiene rubber (SBR)
C. Polyurethane
D. Poly chloroprene
Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its__________________?
Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its__________________?
A. Tensile strength
B. Chemical resistance
C. Flexibility
D. All A., B. & C.
Which of the following is generally not used as eord for synthetic rubber tyre casing ?
Which of the following is generally not used as eord for synthetic rubber tyre casing ?
A. Dacron
B. Nylon
C. Cellulose
D. None of these
Which of the following is not present in bagasse fiber?
Which of the following is not present in bagasse fiber?
A. Cellulose
B. Lignin
C. Pentogens
D. None of these
Dacron is a/an ___________________?
Dacron is a/an ___________________?
A. Polyester
B. Unsaturated polyester
C. Polyamide
D. Inorganic polymer
Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E. (poly chloro tetra fluoro ethylene). It is also called ________________?
Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E. (poly chloro tetra fluoro ethylene). It is also called ________________?
A. Polyurethane
B. Silicone rubber
C. Teflon
D. Epoxy resin
Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of________________?
Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of________________?
A. Cold SBR
B. Butyl rubber
C. Bunai N
D. Buna S
Ebonite is a/an___________________?
Ebonite is a/an___________________?
A. Highly vulcanised rubber
B. Natural rubber
C. Unvulcanised raw rubber
D. Adhesive