FUELS AND COMBUSTION QUIZ

A good coking coal should have high __________ content.

Sulphur & phosphorus

Moisture

Ash

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which adsorbant is used for removing sulphur compounds (S Q, H₂S, RSH etc.) removal from coke oven gas in by-products recovery plant ?

Diatomaceous earth

Basalt

Bog iron (i.e., moist ferric hydroxide)

Silica gel

TRUE ANSWER : ?
YOUR ANSWER : ?

Moisture loss is determined by the

Humidity of combustion air

The water formed by combustion reaction

Moisture content of fuel

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Either A or B, depends on other factors

Remains same

Decreases

Increases

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is coking?

Fussain

Both A & B

Vitrain

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

The hottest part of the flame lies in its____zone.

Unburnt gases

Luminous

Yellow

Non-luminous

TRUE ANSWER : ?
YOUR ANSWER : ?

A good metallurgical coke

Should be brittle

Should have high porosity

Should have low fusion point of its ash

Must contain moderate quantities of ash, moisture, sulphur and volatile matters

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum adiabatic flame temperature is attained, when the fuel is burnt with

More than theoretically required amount of air

Less than theoretically required amount of air

Theoretically required amount of air

Theoretically required amount of oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

Largest constituent of blast furnace gas is

H₂

CO

CO₂

N₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Coke oven gas is a better fuel than blast furnace gas, because of its higher

Heat release rate (thus requiring smaller combustion chamber)

Adiabatic flame temperature

Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?