A. -5
B. 10-30
C. 250-280
D. 500-600
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Related Mcqs:
- Condensation polymerisation of caprolactam is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6?
A. -20 to 25
B. 50 to 75
C. 100 to 150
D. 250-280 - 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 - Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?
A. PVC
B. Bakelite
C. PTFE
D. Epoxy resin - In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is________________?
A. Terylene
B. Polybutadiene
C. PVC
D. Polypropylene - Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ______________ ° C?
A. -20
B. 50
C. 250
D. 500 - Caprolactam, a raw material for the manufacture of nylon-6, is produced from_______________?
A. Phenol
B. Naphthalene
C. Benzene
D. Pyridine - Nylon-6 as compared to nylon-66 is_________________?
A. Harder
B. More abrasion resistant
C. Having higher melting point
D. None of these - Nylon-6 as compared to nylon 66 has lower ?
A. Abrasion resistance
B. Thermal stability
C. Adhesion to rubber
D. Hardness - Nylon-66 compared to nylon-6 has __________________?
A. Lower melting point
B. More abrasion resistant properties
C. Higher hardness
D. All A., B. and C. - Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800 ?
A. 50000
B. 51600
C. 49200
D. 50800
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