Hydrogen content of coke oven gas is __________ percent.

Width of the coke oven towards coke side is slightly more than that on pusher side to

A

Facilitate easy discharging of coke as it swells during carbonisation

B

Facilitate uniform heating of the oven

C

Increase the output of the coke

D

None of these

Fertilizer plant getting its hydrogen requirement partly from coke oven gas is situated at

A

Rourkela (under SAIL)

B

Barauni (under HFC)

C

Nangal (under NFL)

D

Talchar (under FCI)

Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by

A

Adsorption on palladium

B

Cryogenic operations (low temperature cooling)

C

Absorption (using ethanolamine or pyragalloll solution)

D

None of these

Percentage of hydrogen in coke oven gas may be around

A

10

B

25

C

45

D

60

Removal of hydrogen from coke oven gas

A

Increases its calorific value

B

Decreases its calorific value

C

Does not alter its calorific value

D

Is not possible on commerical scale

Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.

A

5

B

25

C

55

D

75

Blast furnace gas compared to coke oven gas has

A

Lower ignition temperature

B

Narrower limit of inflammability

C

Higher calorific value

D

Lower theoretical flame temperature

Coke oven gas is a better fuel than blast furnace gas, because of its higher

A

Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)

B

Adiabatic flame temperature

C

Heat release rate (thus requiring smaller combustion chamber)

D

All of the above

Coke oven gas compared to blast furnace gas is

A

More explosive and inflammable

B

Less poisonous

C

Lighter

D

All of the above

Naphthalene is removed from coke oven gas by

A

Adsorbing on palladium

B

Absorbing in ethanolamine

C

Scrubbing with wash oil

D

Passing it through electrostatic precipitator

Hydrogen content of coke oven gas is __________ percent.

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