Polymer Technology Diphenylamine is added to rubber to Valcanise it Make it thermosetting Protect it from deterioration on exposure to air Make it non-inflammable Valcanise it Make it thermosetting Protect it from deterioration on exposure to air Make it non-inflammable ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (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. Nylon 6:6 Polyester Acrylic Polypropylene Nylon 6:6 Polyester Acrylic Polypropylene 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 Accoustic control and ceiling for building High temperature thermal insulation in furnaces Low temperature thermal insulation as in refrigerator and air conditioners Packing of delicate electronic gadgets Accoustic control and ceiling for building High temperature thermal insulation in furnaces ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer. Linear Glass like transparent Thermosetting Thermoplastic Linear Glass like transparent Thermosetting Thermoplastic ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers has the tendency of decomposing before melting? Polystyrene Nylon None of these PVC Polystyrene Nylon None of these PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent. 99 75 50 90 99 75 50 90 ANSWER DOWNLOAD EXAMIANS APP
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