A. Bakelite (phenol formaldehyde)
B. Polyester
C. Polythene
D. Nylon-6
Related Mcqs:
- 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 ___________________?
A. Densities
B. Melting point
C. Tensile strength
D. Hardness, rigidity & brittleness - Cross linked polymers formed from bi-and trifunctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer ______________ properties?
A. Thermoplastic
B. Thermosetting
C. Elastometric
D. Brittleness - Melt spinning of polymers involves the forcing of polymer melt through spinnerates (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 - 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 co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer ?
A. PTFE
B. Buna-S
C. PMMA
D. Polycaprolactam - Cross linked polymers are__________________?
A. Thermoplastic
B. Thermosetting
C. Either A. or B.
D. Fibres only - Which of the following is an inorganic polymer ?
A. Teflon
B. Perspex
C. Silicones
D. Bakelite - Which of the following is a polymer of Hexamethylene diamine and adipic acid ?
A. Nylon-6
B. Nylon-66
C. Nylon-6, 10
D. Epoxy resin - Which of the following is not a natural polymer ?
A. Nucleic acids e.g. RNA and DNA
B. Polysaccharides
C. Polyisoprene
D. Polyurethane - Which of the following is not a polymer of two monomers ?
A. Teflon
B. Bakelite
C. SBR
D. None of these
