Polymer Technology Plastic tubes & pipes are generally made by __________ moulding. Transfer Compression Extrusion Injection Transfer Compression Extrusion Injection ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermocole (expanded polystyrene) is not used for Low temperature thermal insulation as in refrigerator and air conditioners Packing of delicate electronic gadgets High temperature thermal insulation in furnaces Accoustic control and ceiling for building Low temperature thermal insulation as in refrigerator and air conditioners Packing of delicate electronic gadgets High temperature thermal insulation in furnaces Accoustic control and ceiling for building ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically Phenolic resins Polycarbonates Polymethyl methacrylate (PMMA) Polytetraflouroethylene(PTFE) Phenolic resins Polycarbonates Polymethyl methacrylate (PMMA) Polytetraflouroethylene(PTFE) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Resistance to heat Molecular sizes Polymerisation mechanism Magnitude of intermolecular forces Resistance to heat Molecular sizes Polymerisation mechanism Magnitude of intermolecular forces ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of Siloxane elastomers Polyamides Urea-formaldehyde resins Vinyl polymers Siloxane elastomers Polyamides Urea-formaldehyde resins Vinyl polymers ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Valcunisation of rubber decreases its Tensile strength Tackiness Resistance to organic solvents Working temperature range Tensile strength Tackiness Resistance to organic solvents Working temperature range ANSWER DOWNLOAD EXAMIANS APP
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