Polymer Technology Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? Magnesium Carbon Alkylated diphenyl amine Thiokol Magnesium Carbon Alkylated diphenyl amine Thiokol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ polythene is most prone to stress-cracking Linear low density Cross-linked Low density High density Linear low density Cross-linked Low density High density ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polystyrene is a __________ plastic at room temperature. Brittle Malleable Ductile None of these Brittle Malleable Ductile None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Epoxy resins (i.e., epoxide polymers) Are cross-linked polymers only Contain an epoxy group ( ##### ) at the ends of the polymer Are made by addition polymerisation reaction only Use emulsion polymerisation methods Are cross-linked polymers only Contain an epoxy group ( ##### ) at the ends of the polymer Are made by addition polymerisation reaction only Use emulsion polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology 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 Tensile strength Hardness, rigidity & brittleness Melting point Densities Tensile strength Hardness, rigidity & brittleness Melting point Densities ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are Sub-micromolecules None of these Macromolecules Micromolecules Sub-micromolecules None of these Macromolecules Micromolecules ANSWER DOWNLOAD EXAMIANS APP
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