FUELS AND COMBUSTION QUIZ

Presence of phosphorous in metallurgical coal

Is not undersirable

Increases its caking power

Reduces its calorific value

Badly affects the quality of steel

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has the highest calorific value?

Anthracite

Peat

Lignite

Sub-bituminous coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Soft coke is not

Produced by low temperature carbonisation of coal

A domestic fuel

Used in blast furnaces

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

With increase in the temperature of carbonisation of coal

Methane content in the coke oven gas decreases and carbon monoxide content increases

All of these

Hydrogen content of coke oven gas increases due to cracking of hydrocarbons

Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content

TRUE ANSWER : ?
YOUR ANSWER : ?

Micum Index of a coke is a measure of its

Bulk density

Porosity

Reactivity

Hardness & strength

TRUE ANSWER : ?
YOUR ANSWER : ?

When the coal is heated in absence of air, it is called its

Deoxidation

Gasification

Carbonisation

Coalification

TRUE ANSWER : ?
YOUR ANSWER : ?

When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

Carbonisation

Gasification

Coalification

Oxidation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

10000

5000

300

2000

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant?

Ammonium phosphate

Ammonium nitrate

Ammonium sulphate

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a lean fuel gas?

Coke oven gas

LPG

Blast furnace gas

Natural gas

TRUE ANSWER : ?
YOUR ANSWER : ?