Polymer Technology Condensation polymerisation of __________ produces bakelite. Phenol & acetaldehyde Propylene Phenol & formaldehyde Urea & formaldehyde Phenol & acetaldehyde Propylene Phenol & formaldehyde Urea & formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polypropylene is preferred to polythene, because the former is Both B & C Stronger Non-inflammable Harder Both B & C Stronger Non-inflammable Harder ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polystyrene is a __________ plastic at room temperature. Brittle None of these Ductile Malleable Brittle None of these Ductile Malleable ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its Weathering characteristics Strength Plasticity Elasticity Weathering characteristics Strength Plasticity Elasticity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The starting material used for the manufacture of caprolactum is Ethyl benzene Ethylene glycol DMT Cyclohexane Ethyl benzene Ethylene glycol DMT Cyclohexane ANSWER DOWNLOAD EXAMIANS APP
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