Polymer Technology Polystyrene is a __________ plastic at room temperature. Malleable None of these Ductile Brittle Malleable None of these Ductile Brittle ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology 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? Polythene Nylon-6 Polyester Bakelite (phenol formaldehyde) Polythene Nylon-6 Polyester Bakelite (phenol formaldehyde) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are 0°C and 1 kgf/cm² 5°C and 1 kgf/cm² - 20°C and 1 kgf/cm² 0°C and 3 kgf/cm² 0°C and 1 kgf/cm² 5°C and 1 kgf/cm² - 20°C and 1 kgf/cm² 0°C and 3 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of polymers are in the range of 10²-10⁷ 10⁷-10⁹ 10⁹-10¹¹ 10 to 10³ 10²-10⁷ 10⁷-10⁹ 10⁹-10¹¹ 10 to 10³ ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as Anti-shrinkage agents Hardeners Plasticisers Transparency improver Anti-shrinkage agents Hardeners Plasticisers Transparency improver ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties. Elastometric Thermosetting Thermoplastic Brittleness Elastometric Thermosetting Thermoplastic Brittleness ANSWER DOWNLOAD EXAMIANS APP
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