FUELS AND COMBUSTION QUIZ

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

All of these

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

Is friable, charcoal like substance

Air

Fuel

Both A & B

Neither A nor B

Oil refinery gas

Carburetted water gas

Coke oven gas

Blast furnace gas

500

750

60

160

Controls its ash fusibility and increases its calorific value

All of these

Improves its coking properties

Reduces its sulphur and ash content

Height of the chimney

Both A & B

Neither A nor B

Density of the chimney gases

Onia-Gegi process

Segas process

Semet-Solvay process

Steam reforming of naphtha

Yield of tar is about 3% of dry coal

Volatile matter in coke is zero

Temperature maintained is 700°C

Yield of coke oven gas is 290 Nm³ /ton dry coal

Unpredicatable

> 1

1

42.9

27.6

47.3

23