FUELS AND COMBUSTION QUIZ

Which of the following is a measure of the agglutinating (i.e., binding) property of coal?

Swelling index

Caking index

Gray-king index

Thickness of plastic layer

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fuels is the best for burning on chain grate stoker?

Pulverised coal

Non-caking coal

Caking coal

Coking coal

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Which of the following gaseous fuels has the lowest calorific value?

Blast furnace gas

Gobar gas

Refinery gas

Converter gas

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Use of excess of combustion air in the combustion of fuels results in

Condensation of water vapour from the fuel gas

Long flame

None of these

Heat losses

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Calorific value of bituminous coal may be around __________ Kcal/kg.

20000

6500

1500

500

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Catalyst used in Fischer-Tropsch process is

Zinc oxide

Nickel

Thorium oxide

Alumina

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Advantages of fluidised bed combustion are

Reduced NOx formation in flue gas

High heat transfer rate

All of these

Lower furnace operating temperature

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__________ is used as jet engine fuel.

Petrol

Kerosene

LPG

Diesel

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Power alcohol as compared to straight run gasoline has lower

Octane number

Specific gravity

Calorific value

Viscosity

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Orsat apparatus is meant for

Gravimetric analysis of flue gas

Finding out combustion efficiency

Direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride

None of these

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YOUR ANSWER : ?

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