A. 0.38
B. 0.56
C. 0.81
D. 0.91
Related Mcqs:
- Low density polythene as compared to high density polythene is____________________?
A. Harder
B. Tougher
C. Chemically inert
D. More flexible - Density of high density polythene is about __________ gm/c.c ?
A. 1.18
B. 1.05
C. 0.95
D. 0.99 - 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 - Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?
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 - Softening point of high density polythene is about ______________ °C?
A. 85
B. 135
C. 165
D. 205 - 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 - Polypropylene compared to polythene is___________________?
A. Harder
B. Stronger
C. Lighter
D. All A., B. and C. - Polythene is a/an________________?
A. Addition polymerisation product
B. Condensation polymerisation product
C. Thermosetting material
D. None of these - Polypropylene is preferred to polythene, because the former is ____________________?
A. Non-inflammable
B. Harder
C. Stronger
D. Both B. & C.
