- (A) Polyurethane
- (B) Silicone rubber
- (C) Teflon
- (D) Epoxy resin
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- (A) Cold SBR
- (B) Butyl rubber
- (C) Bunai N
- (D) Buna S
- (A) Highly vulcanised rubber
- (B) Natural rubber
- (C) Unvulcanised raw rubber
- (D) Adhesive
- (A) -5
- (B) 10-30
- (C) 250-280
- (D) 500-600
- (A) High density polyethylene (HDPE)
- (B) Low density polyethylene (LDPE)
- (C) Polypropylene
- (D) Unsaturated polyester
- (A) Teflon
- (B) PTFE
- (C) SBR
- (D) Polycrylates
- (A) PMMA
- (B) Polyacrylonitrile
- (C) Poly Ethyl acrylate
- (D) None of these
- (A) Plastics are good conductors of heat and electricity
- (B) All the polymers are highly crystalline in nature
- (C) Polymers can be vaporised by heating to a very high temperature
- (D) The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation
- (A) Cellulose nitrate
- (B) Regenerated cellulose nitrate
- (C) Regenerated cellulose acetate
- (D) None of these
- (A) Higher melting point
- (B) Higher tensile strength
- (C) Lower density
- (D) None of these
