Polymer Technology Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin. Para-cresol Resorcinol Melamine Phenol Para-cresol Resorcinol Melamine Phenol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The inter particle forces between linear chains in nylon-66 are __________ bonds. Ionic Hydrogen None of these Covalant Ionic Hydrogen None of these Covalant ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher Tensile strength Hardness, rigidity & brittleness Melting point Densities Tensile strength Hardness, rigidity & brittleness Melting point Densities ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation? PTFE Epoxy resin PVC Bakelite PTFE Epoxy resin PVC Bakelite ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is None of these Chlorophrene Isoprene Chloroethane None of these Chlorophrene Isoprene Chloroethane 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 Acrylic Polyester Polypropylene Nylon 6:6 Acrylic Polyester Polypropylene ANSWER DOWNLOAD EXAMIANS APP
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