Polystyrene is a ____________ plastic at room temperature?
Polystyrene is a ____________ plastic at room temperature?
		A. Ductile
B. Brittle
C. Malleable
D. None of these
		A. Ductile
B. Brittle
C. Malleable
D. None of these
		A. Melamine resins
B. Teflon
C. Dacron
D. None of these
		A. Abrasion resistance
B. Thermal stability
C. Adhesion to rubber
D. Hardness
		A. A thermosetting material
B. A condensation polymerisation product
C. Made by employing emulsion polymerisation
D. None of these
		A. Emulsion
B. Suspension
C. Solution
D. Bulk
		A. Neoprene
B. Bakelite
C. Nylon-66
D. Terylene
		A. PVC
B. Bakelite
C. PTFE
D. Epoxy resin