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CHEMICAL ENGINEERING

Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces
[A].

higher amount of methane.

[B].

lower amount of hydrogen.

[C].

both (a) and (b).

[D].

higher amount of both methane and hydrogen.

Answer: Option C

Explanation:

No answer description available for this question.

Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.
[A].

hydrogen

[B].

methane

[C].

unsaturated hydrocarbons

[D].

all (a), (b) and (c)

Answer: Option A

Explanation:

No answer description available for this question.

With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases. Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

With increases in carbonisation temperature

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: With increases in carbonisation temperature
[A].

coke even gas yield increases.

[B].

tar yield increases.

[C].

hydrogen percentage in the coke oven gas decreases.

[D].

methane percentage in the coke oven gas increases.

Answer: Option A

Explanation:

No answer description available for this question.

With increases in carbonisation temperature Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

Increase in ash content of blast furnace coke

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Increase in ash content of blast furnace coke
[A].

reduces its consumption in the furnace.

[B].

increases its consumption in the furnace.

[C].

does not affect its consumption in the furnace.

[D].

decreases its hardness and abrasion resistance.

Answer: Option B

Explanation:

No answer description available for this question.

Increase in ash content of blast furnace coke Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon
[A].

is less liable to spontaneous combustion on storage.

[B].

is more difficult to ignite and produces a shorter flame.

[C].

requires smaller combustion space and less secondary air.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

Fusion point of coal ash increases with increase in its __________ content.

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Fusion point of coal ash increases with increase in its __________ content.
[A].

iron sulphate

[B].

iron silicate

[C].

lime and magnesia

[D].

all (a), (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

Fusion point of coal ash increases with increase in its __________ content. Read More »

CHEMICAL ENGINEERING, Fuels and Combustion