A. CO2
B. SO2
C. Both A. & B.
D. Neither A. nor B.
KOH solution used in Orsat apparatus absorbs____________________? Read More »
Fuels and Combustion A. Yield of ammonia is less
B. Aromatic content of tar is low
C. H2 content in the coke oven gas is more
D. Calorific value of the coke oven gas is lower
In high temperature carbonisation of coal compared to low temperature carbonisation ? Read More »
Fuels and Combustion A. Reduces the coking time
B. Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot
oven walls
C. Increases the loss of fine coal dust from the ovens when charging
D. None of these
A. Type (solid, liquid or gaseous)
B. Calorific value
C. Sulphur content
D. Ignition temperature
A. Solid fuels
B. Gaseous fuels
C. Liquid fuels
D. Fat coals
‘Wobbe index’ is a characteristic of__________________? Read More »
Fuels and Combustion A. Inadequate ventilation
B. Low temperature oxidation
C. Storage in large heaps with small surface to volume ratio
D. All A., B. and C.
Spontaneous combustion of coal on storage results due to___________________? Read More »
Fuels and Combustion A. Tar
B. Coke oven gas
C. Pitch
D. Pulverised coke
A. Calorific value increases
B. Swelling number decreases
C. Swelling number increases
D. Bulk density decreases
As the equilibrium moisture content of the coal increases, its___________________? Read More »
Fuels and Combustion A. Tar
B. Molasses
C. Pitch
D. Line
Which of the following is not used as a binder in coal briquetting ? Read More »
Fuels and Combustion A. Natural gas
B. Coal bed methane (CBM)
C. Liquefied petroleum gas (LPG)
D. Sewage gas
Which of the following fuel gases has the highest calorific value ? Read More »
Fuels and Combustion