Which state proposed a ban on all types of polythene packing for the first time in India?

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

Which state proposed a ban on all types of polythene packing for the first time in India?

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