A. Phenol and cyanide
B. Chlorine
C. Alkalis
D. Suspended solids
A. Bone decay
B. Cancer
C. Asphyxiation (suffocation)
D. Anemia
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. Automobile exhaust
B. Blanketing effect of CO2 in the atmosphere
C. De-forestation
D. Thickening of ozone layer
A. 25
B. 50
C. 80
D. 120
A. Dissolved gases
B. Suspended solids
C. Dissolved solids
D. None of these
A. Thermal power plant
B. Petroleum refinery
C. Nitric acid plant
D. Sulphuric acid plant