Related Questions

Density of low density polythene is about __________ gm/c.c.
A 0.38
B 0.56
C 0.81
D 0.91
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
Polythene (low or high density) containers are not corroded by
A Sulphuric acid (10%) at room temperature
B Nitric acid (95%) at room temperature
C Sulphur trioxide at 60°C
D Any of these
Density of high density polythene is about __________ gm/c.c.
A 1.18
B 1.05
C 0.95
D 0.99
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
Polypropylene compared to polythene is
A Harder
B Stronger
C Lighter
D All of the above
A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and low , using dyes of three qualities-- high, medium and low. One shirt requires 1.5 m of cloth .The following table gives respectively : The number of shirts (of each category) produced, in thousands. The percentage distribution of cloth quality in each type of shirt, and The percentage distribution of dye quality in each type of shirt. How many meters of low-quality cloth is consumed?
A 40,00 m
B 60,000 m
C 46,500 m
D 22,500 m
A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and low , using dyes of three qualities-- high, medium and low. One shirt requires 1.5 m of cloth .The following table gives respectively : The number of shirts (of each category) produced, in thousands. The percentage distribution of cloth quality in each type of shirt, and The percentage distribution of dye quality in each type of shirt. What is the ratio of low quality dye used for C-type shirts to that used for D-type shirts ?
A 2:3
B 1:2
C 2:1
D 3:2
With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.
A No change, set
B Race, high
C high, reset
D set, reset
E None of the above
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

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