- (A) Remain hard as long as they are hot
- (B) Cannot be reclaimed from waste
- (C) Permanent setting resins
- (D) Less brittle than thermosetting resins
Chemical Engineering Mcqs
- (A) Thermoplastic
- (B) Thermosetting
- (C) Elastometric
- (D) Brittleness
- (A) Employs a pressure of 30 kgf/cm2
- (B) Achieves an yield of 95-98% based on ethylene
- (C) Produces very low density polythene
- (D) Does not use any catalyst for polymerisation
- (A) Vulcanite or ebonite
- (B) Spandex fibre
- (C) Polysulphide rubber
- (D) Epoxy resin
- (A) Fibrous
- (B) Plastic
- (C) Resinous
- (D) Rubbery
- (A) Starch
- (B) Cellulose
- (C) Proteins
- (D) Nucleic acids
- (A) Epoxy
- (B) Amino
- (C) Alkyd
- (D) Phenolic
- (A) Butadiene copolymers, Polyamides, Urea-formaldehyde
- (B) Cellulose derivatives, Polyisoprene, Polyethylene
- (C) Cellulose derivatives, Polyamides, Polyurethane
- (D) Polypropylene, Poly vinyl chloride, Silicon
- (A) Caprolactam
- (B) Adipic acid and Hexamethylenediamine
- (C) Maleic anhydride and Hexamethylenediamine
- (D) Sebacic acid and Hexamethylenediamine
- (A) Are made by addition polymerisation reaction only
- (B) Contain an epoxy group (fig bellow) at the ends of the polymer
- (C) Are cross-linked polymers only
- (D) Use emulsion polymerisation methods
