Which of the following is a primary fuel?

Fuels and Combustion
Which of the following is a primary fuel?

Wood charcoal

Blast furnace coke

Gasoline

Natural gas

Wood charcoal

Blast furnace coke

Gasoline

Natural gas

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Fuels and Combustion
Calorific value of tar is about __________ Kcal/kg.

12000

5000

8800

16000

12000

5000

8800

16000

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Fuels and Combustion
'Wobbe index' is a characteristic of

Solid fuels

Liquid fuels

Gaseous fuels

Fat coals

Solid fuels

Liquid fuels

Gaseous fuels

Fat coals

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Fuels and Combustion
When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

Carbonisation

Gasification

Oxidation

Coalification

Carbonisation

Gasification

Oxidation

Coalification

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Fuels and Combustion
Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.

3 & 10

10 & 20

15 & 8

10 & 3

3 & 10

10 & 20

15 & 8

10 & 3

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Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in

Controlling the dust nuisance while charging the coal

All of these

Prevention of clinker formation in the oven

Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

Controlling the dust nuisance while charging the coal

All of these

Prevention of clinker formation in the oven

Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

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Fuels and Combustion

Fuels and Combustion Which of the following is a primary fuel?

Fuels and Combustion Calorific value of tar is about __________ Kcal/kg.

Fuels and Combustion 'Wobbe index' is a characteristic of

Fuels and Combustion When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

Fuels and Combustion Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.

Fuels and Combustion Sometimes water is sprayed during coal charging in the coke oven, which helps in

Fuels and Combustion
Which of the following is a primary fuel?

Fuels and Combustion
Calorific value of tar is about __________ Kcal/kg.

Fuels and Combustion
'Wobbe index' is a characteristic of

Fuels and Combustion
When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

Fuels and Combustion
Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.

Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in