Related Questions

Polypropylene compared to polythene is
A Harder
B Stronger
C Lighter
D All of the above
Low density polythene as compared to high density polythene is
A Harder
B Tougher
C Chemically inert
D More flexible
Commercial production of polypropylene employs __________ polymerisation.
A Emulsion
B Suspension
C Solution
D Bulk
Polythene is industrially prepared by the polymerization of-
A Methane
B Styrene
C Acetylene
D Ethylene
This long sentence "Since it is made of chemicals any food is wrapped up in it particularly in the black polythene bag for a long time, the food item becomes contaminated” refers to
A Contaminated food items are with chemicals
B Food items are contaminated
C The food item becomes contaminated as it is made of chemicals
D Food items are full of chemicals
The monomer of polythene is
A vinyl chloride
B ethylene
C ethyl alcohol
D None of the above
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 is most prone to stress-cracking
A High density
B Low density
C Cross-linked
D Linear low density
Polythene is polymer of
A Ethylene
B Propylene
C Acetylene
D Aniline
The polymerisation of which often following is used in manufacturing of polythene in industry ?
A Methane
B Styrene
C Acetylene
D Ethylene

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