FUELS AND COMBUSTION QUIZ

Fixed carbon and a heating value of 132 BTU/1b

Ash and a heating value of 13, 200 BTU/1b

Fixed carbon and having a heat value of 13, 200 BTU/1b

None of these

950

1150

750

550

Furnace oil

Naphtha

Natural gas

Coal

Domestic ovens

Iron blast furnace

Sinter making

Cupola in foundaries

30

300

3000

30, 000

Higher amount of methane

Higher amount of both methane and hydrogen

Lower amount of hydrogen

Both A & B

It reduces its calorific value tremendously

There are chances of explosion during preheating

It reduces its flame temperature tremendously

The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot

Increases its consumption in the furnace

Reduces its consumption in the furnace

Decreases its hardness and abrasion resistance

Does not affect its consumption in the furnace

Is desirable in producer gas manufacture

None of these

Has poor strength and abrasion resistance

Produces more slag when used in the blast furnace

For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR)

As a motor fuel

As a perfume

As an explosive