A. Coal
B. Uranium ore
C. Iron ore
D. Lime
A. Turbidity
B. Color
C. Hardness
D. Dissolved gases
A. Quenching of hot coke
B. Discharging in the river stream
C. Filtration and recycling for cooling coke oven gas
D. None of these
A. Insufficient supply of combustion air and insufficient time for combustion
B. Poor quality of fuel and improper mixing of fuel & combustion air
C. Poor design & overloading of furnace
D. All A., B. and C.
A. Evaporation & chemical precipitation
B. Biological methods & adsorption in ion exchange materials
C. Fixing into a solid mass with cement and sinking deep in the sea
D. All A., B. & C.
A. Files
B. Algae
C. Micro-organisms
D. Mosquitoes
A. High temperature incineration
B. Pathological incineration
C. Pyrolysis
D. Underground burial in concrete containers