A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Fuels and Combustion
A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Presence of large quantity of hydrogen in the fuel

High sulphur content in the fuel

Low calorific value of the fuel

Lack of thorough mixing of fuel with air

Presence of large quantity of hydrogen in the fuel

High sulphur content in the fuel

Low calorific value of the fuel

Lack of thorough mixing of fuel with air

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Fuels and Combustion
Naphthalene is removed from coke oven gas by

Scrubbing with wash oil (a petroleum product)

Adsorbing on bog iron bed

Absorbing in vetro-coke solution

None of these

Scrubbing with wash oil (a petroleum product)

Adsorbing on bog iron bed

Absorbing in vetro-coke solution

None of these

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Fuels and Combustion
For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

F. gas and coke oven gas

Propane and acetylene

Sewage gas and gobar gas

Propane and LPG

F. gas and coke oven gas

Propane and acetylene

Sewage gas and gobar gas

Propane and LPG

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Fuels and Combustion
A good quality coal should have

High sulphur

None of these

Low fusion point of ash

High ash content

High sulphur

None of these

Low fusion point of ash

High ash content

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Fuels and Combustion
Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.

Latent

None of these

Sensible and latent

Sensible

Latent

None of these

Sensible and latent

Sensible

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Fuels and Combustion
Coke oven gas burns with an yellowish flame, because of the presence of

CO₂

CH₄

NH₃

H₂

CO₂

CH₄

NH₃

H₂

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Fuels and Combustion

Fuels and Combustion A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Fuels and Combustion Naphthalene is removed from coke oven gas by

Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

Fuels and Combustion A good quality coal should have

Fuels and Combustion Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.

Fuels and Combustion Coke oven gas burns with an yellowish flame, because of the presence of

Fuels and Combustion
A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the

Fuels and Combustion
Naphthalene is removed from coke oven gas by

Fuels and Combustion
For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

Fuels and Combustion
A good quality coal should have

Fuels and Combustion
Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.

Fuels and Combustion
Coke oven gas burns with an yellowish flame, because of the presence of