Fuels and Combustion

A. 2.5
B. 0.5
C. 10
D. 20

A. Ash fusion temperature
B. Calorific value
C. Ignition temperature
D. Caking index

A. Transport the coal to the burner
B. Dry the coal
C. Ensure efficient burning of coal around the burner
D. Reduce primary air requirement

A. Permits the use of high ash content coal
B. Permits the use of low fusion point ash coal
C. Accelerates the burning rate and economises on fuel combustion
D. All A., B. and C.

A. Junker’s
B. Bomb
C. Boy’s
D. None of these

A. Lignite
B. Semi-anthracite
C. Sub-bituminous
D. Bituminous

A. Fixed carbon and having a heat value of 13, 200 BTU/1b
B. Ash and a heating value of 13, 200 BTU/1b
C. Fixed carbon and a heating value of 132 BTU/1b
D. None of these

A. Volatile matter content increases
B. Carbon content decreases
C. Moisture content increases
D. Ash content increases

A. Propane and acetylene
B. Propane and LPG
C. Sewage gas and gobar gas
D. B.F. gas and coke oven gas

A. Sulphur & phosphorous content
B. Porosity
C. Fusion point of its ash
D. Hardness & strength