Polymer Technology Which of the following polymers belong to the class of formaldehyde resin? Dacron Teflon None of these Melamine resins Dacron Teflon None of these Melamine resins ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ practically possess no elasticity. Vulcanite or ebonite Epoxy resin Polysulphide rubber Spandex fibre Vulcanite or ebonite Epoxy resin Polysulphide rubber Spandex fibre ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? Carbon Magnesium Thiokol Alkylated diphenyl amine Carbon Magnesium Thiokol Alkylated diphenyl amine ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent. 50 90 75 99 50 90 75 99 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent. 1-1000 1000-1500 2000-2500 1500-2000 1-1000 1000-1500 2000-2500 1500-2000 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Synthetic rubber Is softer at higher temperature Is brittle at low temperature Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Deforms, if stretched to double of its original dimension Is softer at higher temperature Is brittle at low temperature Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Deforms, if stretched to double of its original dimension ANSWER DOWNLOAD EXAMIANS APP
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