Polymer Technology Most of the plastics are safe to be used upto a maximum temperature of __________ °C. 150 450 100 350 150 450 100 350 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Contact lenses for eyes are made of perspex, which is nothing but Unsaturated polyester Polystyrene Polymethylmethacrylate Polypropylene Unsaturated polyester Polystyrene Polymethylmethacrylate Polypropylene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Most commonly used rubber vulcanisation agent is Sulphur Alumina Platinum Bromine Sulphur Alumina Platinum Bromine ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? Nucleic acids Proteins Cellulose Starch Nucleic acids Proteins Cellulose Starch ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Starting material for the production of butadiene in India is Benzol Ethyl alcohol Naphthalene Phthalic anhydride Benzol Ethyl alcohol Naphthalene Phthalic anhydride 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 Reduce the time of vulcanisation and quantity of vulcanising agent Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
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