90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of _____________ °C?
A. -5
B. 10-30
C. 250-280
D. 500-600
Polymer Technology
Flexible plastic pipes are made of___________________?
Flexible plastic pipes are made of___________________?
A. High density polyethylene (HDPE)
B. Low density polyethylene (LDPE)
C. Polypropylene
D. Unsaturated polyester
Buna-S is also known as_________________?
Buna-S is also known as_________________?
A. Teflon
B. PTFE
C. SBR
D. Polycrylates
Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?
Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?
A. Terylene
B. Nylon-66
C. PVC
D. Polystyrene
Which of the following polymers has the tendency of decomposing before melting ?
Which of the following polymers has the tendency of decomposing before melting ?
A. Polystyrene
B. Nylon
C. PVC
D. None of these
Which of the following polymers is used for making a non stick coating on frying pans ?
Which of the following polymers is used for making a non stick coating on frying pans ?
A. Bakelite
B. Teflon
C. Perspex
D. PVC
The organic acid monomer in nylon-66 is __________________?
The organic acid monomer in nylon-66 is __________________?
A. Sebacic acid
B. Terephthalic acid
C. Adipic acid
D. Benzoic acid
Non sulphonated hard bakelites are not used for making _______________________?
Non sulphonated hard bakelites are not used for making _______________________?
A. Ion-exchange resins
B. Fountain pen barrels
C. Formica table tops
D. Combs
Density of high density polythene is about __________ gm/c.c ?
Density of high density polythene is about __________ gm/c.c ?
A. 1.18
B. 1.05
C. 0.95
D. 0.99
Bakelite is a/an ______________________?
Bakelite is a/an ______________________?
A. Addition polymer
B. Elastomer
C. Thermoplastic
D. None of these