Rain coats are made of__________________?
Rain coats are made of__________________?
		A. Neoprene
B. PVC
C. Polyurethane
D. SBR
		A. Neoprene
B. PVC
C. Polyurethane
D. SBR
		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
		A. Chain length
B. Intermolecular forces
C. Both A. and B.
D. None of these
		A. Polyamide
B. Polyester
C. Polyolefin
D. Addition polymer
		A. Butadiene copolymers, Polyamides, Urea-formaldehyde
B. Cellulose derivatives, Polyisoprene, Polyethylene
C. Cellulose derivatives, Polyamides, Polyurethane
D. Polypropylene, Poly vinyl chloride, Silicon
		A. PVC
B. Silicone rubber
C. Polyurethanes
D. Polyamides
		A. 50°C and 3 – 4 kg/cm2
B. 50°C and 1 kgf/cm2
C. 250°C and 10 kgf/cm2
D. 250°C and 1 kgf/cm2