FUELS AND COMBUSTION QUIZ

__________ process is meant for direct hydrogenation of coal to produce liquid fuel.

Lurgi

Fischer-Tropsch

Bergius

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

With increase in C/H ratio of a fuel, the amount of CO₂ formed on its complete combustion

Increases

Decreases

Either A or B, depends on other factors

Remains same

TRUE ANSWER : ?
YOUR ANSWER : ?

Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm.

95-100

25-30

3-5

60-65

TRUE ANSWER : ?
YOUR ANSWER : ?

Use of preheated air for combustion of fuel in the furnace, increases the

Flame temperature

Scale losses of the furnace stock

Calorific value of the fuel

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Flue gas from the heating chamber of byproduct coke ovens is removed by

Induced draft fan

Steam ejector

Natural draft

Forced draft fan

TRUE ANSWER : ?
YOUR ANSWER : ?

Gray-King Assay and Roga Index of coal is a measure of its

Abradability

Grindability

Caking and swelling properties

Weathering properties

TRUE ANSWER : ?
YOUR ANSWER : ?

Grindability index of a coal is 100. It implies that the

Coal can be pulverised with great difficulty

Coal can be easily pulverised

Coal can't be pulverised

Power consumption in grinding the coal will be very high

TRUE ANSWER : ?
YOUR ANSWER : ?

Water gas constitutes mainly of

CO₂ & H₂

CO & N₂

CO & H₂

CH₄ & H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Bulk density of pulverised coal may be about __________ kg/m³.

100

500

1500

1000

TRUE ANSWER : ?
YOUR ANSWER : ?

'Fuel' can be defined as a substance which produces heat by

Combustion

Nuclear fission

Nuclear fusion

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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