Polymer Technology Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres. Glycol soaking Improving the stretchability Dyeing/colouring Detergent solution washing Glycol soaking Improving the stretchability Dyeing/colouring Detergent solution washing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. Solid Neither solid nor liquid Combination of solid & liquid Liquid Solid Neither solid nor liquid Combination of solid & liquid Liquid 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 Which of the following types of polymers has the strongest inter particle forces? Elastomers Fibres Thermoplastics Thermosetting polymers Elastomers Fibres Thermoplastics Thermosetting polymers ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? Stearic acid estors Esters of phthalic acid Ethylene glycol Tricresyl phosphate Stearic acid estors Esters of phthalic acid Ethylene glycol Tricresyl phosphate ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of polymers are in the range of 10⁷-10⁹ 10⁹-10¹¹ 10²-10⁷ 10 to 10³ 10⁷-10⁹ 10⁹-10¹¹ 10²-10⁷ 10 to 10³ ANSWER DOWNLOAD EXAMIANS APP
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