FUELS AND COMBUSTION QUIZ

In flue gas analysis by Orsat's apparatus, carbon dioxide is absorbed by

Potassium hydroxide

Alkaline pyragllol solution

Dilute potassium carbonate

Cuporus chloride

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Oxygen enriched air

None of these

Air

Oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

Mineral matter content (M) and ash content (A) in coal are approximately related as

M = 2A

M = 1.1A

M = 1.5A

M = A

TRUE ANSWER : ?
YOUR ANSWER : ?

Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

10000

300

5000

2000

TRUE ANSWER : ?
YOUR ANSWER : ?

Higher fuel combustion efficiency can not be achieved by

Preheating of fuel gases & combustion air

Reducing sulphur content in the fuel

Adopting proper fuel firing technique & fuel preparation

Supplying correct amount of combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³.

6

2

4

1

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Carburetted water gas

Gobar gas

LPG

Natural gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Cannel coal and boghead coal are the examples of

Sapropelic coals

Humic coals

None of these

Liptobiolites

TRUE ANSWER : ?
YOUR ANSWER : ?

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

50

95

75

30

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

CO + H₂O ⟷ CO₂ + H₂

C + H₂O ⟷ CO + H₂

C + 2H₂O ⟷ CO₂ + 2H₂

2CO ⟷ C + CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

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