‘Mixed gas’ used in steel plants is a mixture of___________________?

Byadmin March 7, 2019August 26, 2021

‘Mixed gas’ used in steel plants is a mixture of___________________?

A. B.F. gas and coke oven gas
B. Coke oven gas and converter gas
C. Coke oven gas and L.P.G
D. Blast furnace gas and naphtha vapor

Fuels and Combustion

Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?

Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?

A. 2.4
B. 1.75
C. 0.87
D. 11.4

Read More Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?
CHEMICAL ENGINEERING | Fuels and Combustion

Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm3 /ton of dry coal.

Question: Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm3 /ton of dry coal.
[A].

60
[B].
160
[C].
500
[D].
750

Answer: Option B

Explanation:

No answer description available for this question.

Read More Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm3 /ton of dry coal.
Fuels and Combustion

For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?

For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?

A. Increase
B. Decrease
C. Increase or decrease depending on the fuel type
D. Not change

Read More For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?
CHEMICAL ENGINEERING | Fuels and Combustion

The calorific value of ‘LPG’ (50% propane + 50% butane) is about __________ kcal/Nm3.

Question: The calorific value of ‘LPG’ (50% propane + 50% butane) is about __________ kcal/Nm3.
[A].

5000
[B].
25, 000
[C].
10, 000
[D].
15, 000

Answer: Option B

Explanation:

No answer description available for this question.

Read More The calorific value of ‘LPG’ (50% propane + 50% butane) is about __________ kcal/Nm3.
Fuels and Combustion

Combustion of pulverised coal as compared to that of lump coal ________________?

Combustion of pulverised coal as compared to that of lump coal ________________?

A. Develops a non-luminous flame
B. Develops a low temperature flame
C. Can be done with less excess air
D. Provides a lower rate of heat release

Read More Combustion of pulverised coal as compared to that of lump coal ________________?
CHEMICAL ENGINEERING | Fuels and Combustion

A particular coal is said to be free burning when it

Question: A particular coal is said to be free burning when it
[A].

burns completely.
[B].
gives smokeless burning.
[C].
shows little or no fusing action.
[D].
none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Read More A particular coal is said to be free burning when it

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