A. Nylon-66
B. Nylon-6
C. Teflon
D. SBR
Related Mcqs:
- Polycaprolactam is nothing but __________________?
A. Orlon
B. Nylon-66
C. Nylon-6
D. Saran - Polycaprolactam is____________________?
A. Nylon-6
B. Nylon-66
C. Dacron
D. Rayon - Polycaprolactam (Nylon – 6) is produced by the condensation polymerisation of caprolactam at 240-280°C in which the conversion of caprolactam is about ______________ percent?
A. 50
B. 75
C. 90
D. 99 - Neoprene is chemically known as _________________?
A. Polybutadiene
B. Styrene butadiene rubber (SBR)
C. Polyurethane
D. Poly chloroprene - Viscosity of a polymer solution or melt _________________?
A. Decreases with increase in molecular weight
B. Decreases with increase in temperature
C. Increases with increase in temperature
D. Does not vary with temperature rise - Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?
A. Terylene
B. Nylon-66
C. PVC
D. Polystyrene - Branched chair polymers as compared to linear polymers have _________________?
A. Higher melting point
B. Higher tensile strength
C. Lower density
D. None of these - Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to _________________?
A. Protect rubber goods from attack by oxygen & ozone present in the atmosphere
B. Reduce its viscosity to permit easier processing
C. Reduce the time of vulcanisation and quantity of vulcanising agent
D. Increase its viscosity - Flexible foam (for mattresses) are usually made of _________________?
A. PVC
B. Silicone rubber
C. Polyurethanes
D. Polyamides - Buna-S is also known as_________________?
A. Teflon
B. PTFE
C. SBR
D. Polycrylates