A. 7 kgf/cm2 and 70 °C
B. 1000 kgf/cm2 and 100°C
C. 7 kgf/cm2 and 700°C
D. 1 kgf/cm2 (gage) and 70°C
Related Mcqs:
- A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of_______________________?
A. Siloxane elastomers
B. Polyamides
C. Vinyl polymers
D. Urea-formaldehyde resins - Low density polythene as compared to high density polythene is____________________?
A. Harder
B. Tougher
C. Chemically inert
D. More flexible - 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 - Low pressure Zeigler process of polythene manufacture____________________?
A. Employs a pressure of 30 kgf/cm2
B. Achieves an yield of 95-98% based on ethylene
C. Produces very low density polythene
D. Does not use any catalyst for polymerisation - Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________?
A. Ni
B. V2O5
C. Fe
D. Aluminium triethyl combined with titanium tetrachloride - Catalyst used in the production of high density polythene by low pressure Ziegler process is ____________________?
A. Aluminium triethyl activated with TiCl4
B. Platinum
C. Molybdenum
D. Nickel - Density of high density polythene is about __________ gm/c.c ?
A. 1.18
B. 1.05
C. 0.95
D. 0.99 - In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of__________________?
A. Cross linked polystyrene
B. Phenol formaldehyde resins
C. Polyesters
D. Polyamides - Density of low density polythene is about ____________ gm/c.c?
A. 0.38
B. 0.56
C. 0.81
D. 0.91 - Zeigler – Natta catalyst (AlR3 – AlCl3) is used in the polymerisation of_________________?
A. Vinyl acetate
B. Vinyl chloride
C. Propylene
D. Styrene
