Related Questions

Low density polythene as compared to high density polythene is
A Harder
B Tougher
C Chemically inert
D More flexible
Ahmad has containers of two different sizes. The total capacity of 16 containers of one size is x gallons,and the total capacity of 8 containers of the other size is also x gallons , and x> 0. In terms of x , what is the capacity, in gallons, of each of the larger containers?
A 4x
B 2x
C x/2
D x/8
Density of low density polythene is about __________ gm/c.c.
A 0.38
B 0.56
C 0.81
D 0.91
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
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
Gunmetal and bronze are not corroded by the action of
A Wet chlorine
B Synthetic detergent solution
C Hydrochloric acid (10%)
D Nitric acid (
Stainless steel is not corroded by
A Hydrochloric acid (10%)
B Nitric acid (10%)
C Sulphuric acid (10%)
D Saturated brine

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