A. Cellulose acetate
B. Cellulose nitrate
C. PVC
D. High density polythene
0
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?
0
The main use of butadiene is____________________?
A. Polythene
B. PVC
C. Rayon
D. Polyvinyl acetate
0
Teflon is__________________?
A. As a plasticiser for unsaturated polyester
B. In the manufacture of synthetic rubber
C. As an anti-skimming agent in paint
D. None of these
0
Orlan fibre which is used as a wool substitute is __________________?
A. Phenol formaldehyde
B. An inorganic polymer
C. Polytetrafluroethylene (PTFE)
D. A monomer
0
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_________________?
A. An amorphous polymer
B. A natural polymeric fibre
C. Polyacrylonitrile
D. Poly-methyl-methacrylate (PMMA)
0
Zeigler process________________?
A. Chloroethane
B. Chloroprene
C. Isoprene
D. None of these
0
Polypropylene compared to polythene is___________________?
A. Produces high density polythene
B. Uses no catalyst
C. Produces low density polythene
D. Employs very high pressure
0
Nylon-6 as compared to nylon-66 is_________________?
A. Harder
B. Stronger
C. Lighter
D. All A., B. and C.
0
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 ?
A. Harder
B. More abrasion resistant
C. Having higher melting point
D. None of these
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