The only natural thermoplastic resin, which is a product of animal life is ____________________?

A. A copolymer
B. A condensation polymer
C. Obtained by polymerising vinyl cyanide
D. All A., B. and C.

A. Compression
B. Injection
C. Transfer
D. Extrusion

A. Decreases its tensile strength
B. Increases its ozone & oxygen reactivity
C. Increases its oil & solvent resistance
D. Converts its plasticity into elasticity

A. Teflon
B. Bakelite
C. SBR
D. PVC

A. Neoprene
B. Bakelite
C. Nylon-66
D. Terylene

A. Epoxy
B. Amino
C. Alkyd
D. Phenolic