Polymer Technology Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is Teflon Nylon-66 Polyester Bakelite Teflon Nylon-66 Polyester Bakelite ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are Micromolecules Macromolecules None of these Sub-micromolecules Micromolecules Macromolecules None of these Sub-micromolecules 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? Nylon-6 Polyester Polythene Bakelite (phenol formaldehyde) Nylon-6 Polyester Polythene Bakelite (phenol formaldehyde) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose is the main contituent of most __________ fibres. Natural Spandex Acrylic Synthetic Natural Spandex Acrylic Synthetic ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Nylon-6 as compared to nylon-66 is Harder None of these More abrasion resistant Having higher melting point Harder None of these More abrasion resistant Having higher melting point ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals. Hydroflouric acid Organic peroxides Sulphuric acid None of these Hydroflouric acid Organic peroxides Sulphuric acid None of these ANSWER DOWNLOAD EXAMIANS APP
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