FUELS AND COMBUSTION QUIZ

Presence of free moisture in coal is most disadvantageous during

Its pulverisation (as it requires more power)

None of these

Handling (e.g. when emptying wagons)

Combustion of fire slacks on the grates

TRUE ANSWER : ?
YOUR ANSWER : ?

The pyragallol solution used in orsat apparatus can absorb

All of these

Both O₂ and CO

Both O₂ and CO₂

Only O₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in

Either A or B

Either A or C without gain or loss of heat

Oxygen

Air

TRUE ANSWER : ?
YOUR ANSWER : ?

Lignite is

Can be used for gasification and steam generation

A black banded coal which burns with a non-smoky yellowish flame

A high rank coal

A coking coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a single stage, fixed bed high pressure coal gasification process?

Kopper-Totzek process

Winkler process

None of these

Lurgi Process

TRUE ANSWER : ?
YOUR ANSWER : ?

Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.

10

20

35

5

TRUE ANSWER : ?
YOUR ANSWER : ?

Presence of force moisture in coal is most disadvantageous during its

Transportation and handling

Pulverisation

Storage

Washing

TRUE ANSWER : ?
YOUR ANSWER : ?

By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of

Benzol

Tar

None of these

Ammonia

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has the highest calorific value (kcal/Nm³) ?

Carburetted water gas

LPG

Natural gas

Gobar gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm³ /ton of dry coal.

60

750

160

500

TRUE ANSWER : ?
YOUR ANSWER : ?

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