Polymer Technology Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? Neither A nor B Ammonium alum Potassium alum Both A & B Neither A nor B Ammonium alum Potassium alum Both A & B ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Amino resins are used in paper treatment to improve its All of these Wet rub resistance Folding endurance Wet tear and bursting strength All of these Wet rub resistance Folding endurance Wet tear and bursting strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition of stabiliser during PVC manufacture is done to Prevent its thermal degradation Improve its elasticity Reduce the melt viscosity & glass transition temperature Improve its impact strength Prevent its thermal degradation Improve its elasticity Reduce the melt viscosity & glass transition temperature Improve its impact strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Nylon-66 compared to nylon-6 has Lower melting point All of these Higher hardness More abrasion resistant properties Lower melting point All of these Higher hardness More abrasion resistant properties 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? Esters of phthalic acid Stearic acid estors Ethylene glycol Tricresyl phosphate Esters of phthalic acid Stearic acid estors Ethylene glycol Tricresyl phosphate ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Does not produce linear polymers Produces only thermoplastic material Produces epoxy polymers Does not need any catalyst Does not produce linear polymers Produces only thermoplastic material Produces epoxy polymers Does not need any catalyst ANSWER DOWNLOAD EXAMIANS APP
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