Polymer Technology Polystyrene is a light, transparent, thermoplastic material used for making Packaging bags Toys and combs Electrical insulation Non-sticking utensils Packaging bags Toys and combs Electrical insulation Non-sticking utensils ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polystyrene is a __________ plastic at room temperature. None of these Malleable Brittle Ductile None of these Malleable Brittle Ductile ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers belong to the class of formaldehyde resin? Dacron Teflon Melamine resins None of these Dacron Teflon Melamine resins None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Molecular sizes Polymerisation mechanism Resistance to heat Magnitude of intermolecular forces Molecular sizes Polymerisation mechanism Resistance to heat Magnitude of intermolecular forces ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Viscosity of a polymer solution or melt Decreases with increase in molecular weight Increases with increase in temperature Decreases with increase in temperature Does not vary with temperature rise Decreases with increase in molecular weight Increases with increase in temperature Decreases with increase in temperature Does not vary with temperature rise ANSWER DOWNLOAD EXAMIANS APP
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