FUELS AND COMBUSTION QUIZ

Which of the following gaseous fuels has the lowest calorific value?

Gobar gas

Refinery gas

Converter gas

Blast furnace gas

TRUE ANSWER : ?
YOUR ANSWER : ?

The calorific value of natural gas is about __________ kcal/Nm³.

10, 000

25, 000

2500

35, 000

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has the highest calorific value (kcal/Nm³) ?

LPG

Gobar gas

Carburetted water gas

Natural gas

TRUE ANSWER : ?
YOUR ANSWER : ?

The calorific value of L.D. converter gas is about __________ Kcal/Nm³ .

1800

4500

10000

800

TRUE ANSWER : ?
YOUR ANSWER : ?

Orsat apparatus

Gives flue gas analysis on dry basis

Determines N₂ in flue gas indirectly

Can

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec.

500

0.5

50

10

TRUE ANSWER : ?
YOUR ANSWER : ?

Low temperature carbonisation

Produces less quantity of tar than high temperature carbonisation

Is mainly for producing the smokeless domestic coke

Is meant for the production of 'metallurgical coke'

Produces higher quantity of gas than high temperature carbonisation

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum percentage of CO₂ in a flue gas (from a carbonaceous fuel) can be

21

77

79

29

TRUE ANSWER : ?
YOUR ANSWER : ?

Coking time in beehive coke oven is about

One week

12 hours

2-3 days

Two weeks

TRUE ANSWER : ?
YOUR ANSWER : ?

KOH solution used in orsat apparatus absorbs

SO₂

Neither A nor B

CO₂

Both A & B

TRUE ANSWER : ?
YOUR ANSWER : ?