Related Questions

Terylene is a condensation polymer of ethylene glycol and which acid?
A Benzoic Acid
B Salicylic acid
C Phthalic acid
D Terephthalic acid
Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
A 1 atm & 100°C
B 5 atm & 275°C
C 100 atm & 500°C
D 50 atm & 1000°C
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces
A Nylon-6
B Dacron
C Polyester
D PVC
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
A Nylon-6
B Dacron
C Polyester
D PVC
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.
A Acrylic
B Polyester
C Nylon 6:6
D Polypropylene
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
A AgO
B Al2O3
C ZnCl2
D FE2O3
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.
A Polythene
B PVC
C Rayon
D Polyvinyl acetate
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?
A Bakelite (phenol formaldehyde)
B Polyester
C Polythene
D Nylon-6
Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
A Hardness in water
B Turbidity in water
C Dissolved oxygen in water
D Residual chlorine in water
Commercially ethylene is produced from naphtha by
A Catalytic cracking
B Catalytic dehydrogenation
C Pyrolysis
D Hydrocracking

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