FUELS AND COMBUSTION QUIZ

Sulphur in metallurgical coal

Both A and B

Neither A nor B

Contributes to its heating value

Affects the quality of steel produced as cracks develop on the surface while rolling the steel

TRUE ANSWER : ?
YOUR ANSWER : ?

Flue gas from the heating chamber of byproduct coke ovens is removed by

Induced draft fan

Forced draft fan

Steam ejector

Natural draft

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a rich fuel gas?

Producer gas

None of these

Coal gas from underground gasification of coal

Refinery gases

TRUE ANSWER : ?
YOUR ANSWER : ?

Sometimes water is sprayed during coal charging in the coke oven, which helps in

Controlling the dust nuisance while charging the coal

Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

All of these

Prevention of clinker formation in the oven

TRUE ANSWER : ?
YOUR ANSWER : ?

Low temperature carbonisation

Produces higher quantity of gas than high temperature carbonisation

Produces less quantity of tar than high temperature carbonisation

Is meant for the production of 'metallurgical coke'

Is mainly for producing the smokeless domestic coke

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following can be made into briquettes without the use of a binder?

Anthracite coal

None of these

Lignite

Bituminous coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Presence of __________ in a dry gaseous fuel does not contribute to its calorific value.

Hydrogen

Carbon

Sulphur

Oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

Benzol is used

For producing benzene, tolune & xylene by its distillation

As a motor fuel blend

Both A & B

Neither A nor B

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

Air

Oxygen

Either A or B

Either A or C without gain or loss of heat

TRUE ANSWER : ?
YOUR ANSWER : ?

Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use.

70-100

43832

150-200

15-30

TRUE ANSWER : ?
YOUR ANSWER : ?