FUELS AND COMBUSTION QUIZ

One kg of carbon for theoretically complete combustion requires __________ kg of air.

23

11.5

12

0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following would require maximum amount of % excess air for complete combustion?

Furnace oil

Coke oven gas

Pulverised coal

Lump coal (fixed on chain grate)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the maximum coal producing state in India?

West Bengal

Orissa

Assam

Jharkhand

TRUE ANSWER : ?
YOUR ANSWER : ?

Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm³.

300

30

30, 000

3000

TRUE ANSWER : ?
YOUR ANSWER : ?

Quantity of coke produced from metallurgical coal may be around __________ percent.

50

30

75

95

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a primary fuel?

Natural gas

Wood charcoal

Gasoline

Blast furnace coke

TRUE ANSWER : ?
YOUR ANSWER : ?

The main function of primary air in pulverised coal fired burner is to

Burn CO to CO₂

Dry and transport the coal

Have proper combustion by supplying it around the burner

Preheat the tertiary air used for complete combustion of CO to CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ prohibits the use of alcohols directly in petrol engines.

Low calorific value

High cost & availability

Low flash point

Low octane number

TRUE ANSWER : ?
YOUR ANSWER : ?

Junker's calorimeter is used to determine the calorific value of

Fuel oil

Gaseous fuels

None of these

Pulverised coal

TRUE ANSWER : ?
YOUR ANSWER : ?

During its calorific value determination by bomb calorimeter, coal is combusted by

Air

None of these

Oxygen enriched air

Oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

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