FUELS AND COMBUSTION QUIZ

'Fat coals' are those coals which have very high

Caking capacity

Inherent moisture content

Volatile matter content

Fusion point of its ash

TRUE ANSWER : ?
YOUR ANSWER : ?

Coke oven gas compared to blast furnace gas is

Lighter

More explosive and inflammable

All of these

Less poisonous

TRUE ANSWER : ?
YOUR ANSWER : ?

Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

1700-1800

400-500

900-1000

1400-1500

TRUE ANSWER : ?
YOUR ANSWER : ?

If oxygen content in the flue gas rises too high, fuel is being wasted by

Moisture loss

Dry gas/stack gas loss

Incomplete combustion

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following coke has the least percentage of ash?

Beehive coke

Foundary coke

Metallurgical coke

Petroleum coke

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

Fischer-Tropsch

Lurgi

Bergius

TRUE ANSWER : ?
YOUR ANSWER : ?

In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing

H₂O

CO₂

CO

O₂

TRUE ANSWER : ?
YOUR ANSWER : ?

The shift conversion reaction taking place during water gas manufacture is given by

C + 2H₂O ⟷ CO₂ + 2H₂

None of these

CO + H₂O ⟷ CO₂ + H₂

C + H₂O ⟷ CO + H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Softening temperature of coal ash is a measure of the __________ of coal.

Coking tendency

Caking tendency

Clinkering tendency

Size stability

TRUE ANSWER : ?
YOUR ANSWER : ?

'Mixed gas' used in steel plants is a mixture of

Coke oven gas and L.P.G

Coke oven gas and converter gas

F. gas and coke oven gas

Blast furnace gas and naphtha vapor

TRUE ANSWER : ?
YOUR ANSWER : ?

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