Environmental Engineering in CE
Radioactive substances present in the polluted water stream can be removed by

None of these
Biological oxygen treatment
Coagulation and filtration
Adsorption in ion exchange materials

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Environmental Engineering in CE
Smoke is produced due to

All of these
Poor design & overloading of furnace
Insufficient supply of combustion air and insufficient time for combustion
Poor quality of fuel and improper mixing of fuel & combustion air

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