Related Questions

Low density polythene as compared to high density polythene is
A Harder
B Tougher
C Chemically inert
D More flexible
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.
A $${\frac{1}{5}^{{\text{th}}}}$$
B $${\frac{1}{{15}}^{{\text{th}}}}$$
C $${\frac{1}{{30}}^{{\text{th}}}}$$
D $${\frac{1}{{50}}^{{\text{th}}}}$$
Stacked packing compared to dumped packing
A Provides poorer contact between the fluids
B Gives lower pressure drop
C Both A & B
D Gives higher pressure drop
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.
A Greater than
B Smaller than
C Equal to
D Either A, or B ; depends on the type of packing
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 polymerisation of which often following is used in manufacturing of polythene in industry ?
A Methane
B Styrene
C Acetylene
D Ethylene
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
Polythene is industrially prepared by the polymerization of-
A Methane
B Styrene
C Acetylene
D Ethylene
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

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