Polymer Technology SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at 1:2 3:1 2:1 1:3 1:2 3:1 2:1 1:3 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Produces epoxy polymers Produces only thermoplastic material Does not produce linear polymers Does not need any catalyst Produces epoxy polymers Produces only thermoplastic material Does not produce linear polymers Does not need any catalyst ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature. Polyester Nylon Polypropylene Polyacrylonitrile Polyester Nylon Polypropylene Polyacrylonitrile ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cross linked polymers are Thermosetting Thermoplastic Either A or B Fibres only Thermosetting Thermoplastic Either A or B Fibres only ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers is used for making a non stick coating on frying pans? Bakelite Teflon PVC Perspex Bakelite Teflon PVC Perspex ANSWER DOWNLOAD EXAMIANS APP
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