A. Controlling the excess air
B. Oxygen enrichment of combustion air
C. Using low c.v. fuels
D. Maintaining proper draft in the furnace
A. Back draughting
B. Banking
C. Under pressurising
D. None of these
A. Contains more volatile matter than bituminous coal
B. Ignites more easily than bituminous coal
C. Is essentially a coking coal
D. Burns with short, bluish, yellow-tipped flame producing very little smoke
A. Fully
B. Partially
C. Not at all
D. Negligibly
A. Bright
B. Splint
C. Non-banded
D. Boghead
A. Pneumatically convey the pulverised coal
B. Completely burn the volatile matter
C. Burn the lumpy coal
D. None of these
A. 30
B. 65
C. 120
D. 180
A. Partial combustion of coal
B. Partial combustion of large size (< 50 mm) coke
C. High pressure gasification of coal (e.g. in Lurgi gasifier)
D. Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier)
A. CO content
B. Dew point
C. CO2 content
D. O2 content
A. Benzol
B. Toluene
C. Pyridine
D. Cerosote