FUELS AND COMBUSTION QUIZ

Octane number of 2, 2, 4 - trimethyl pen-tane is

In between 0 and 100

More than 100

100

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fuel gases is heavier than air?

Blast furnace gas

Natural gas

Coke oven gas

Water gas

TRUE ANSWER : ?
YOUR ANSWER : ?

About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

2

5

1

3

TRUE ANSWER : ?
YOUR ANSWER : ?

Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg.

4000

8000

15000

1000

TRUE ANSWER : ?
YOUR ANSWER : ?

Very __________ coals are completely devoid of cokability i.e, it is non coking.

Mature

Neither A nor B

Young

Both A & B

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace gas burns with a bluish flame, because of the presence of

CO₂

S

CH₄

CO

TRUE ANSWER : ?
YOUR ANSWER : ?

Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.

90-110

>120

TRUE ANSWER : ?
YOUR ANSWER : ?

Fussain

Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal

Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation

Is friable, charcoal like substance

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Gobar gas constitutes mainly of

CO & CO₂

CH₄ & N₂

CO & N₂

CH₄ & CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr.

10

0.5

2.5

20

TRUE ANSWER : ?
YOUR ANSWER : ?