Which of the following is a secondary air pollutant?
Which of the following is a secondary air pollutant?
Removal of __________ is accomplished by aeration of water.
Removal of __________ is accomplished by aeration of water.
Replenishment of dissolved oxygen in water stream polluted with industrial waste
Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by
Most efficient and suitable dust removal equipment for removal of flyash from fl
Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the
The weakest sound that can be heard by a person in a quiet environment is equiva
The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel.
Foaming and priming in boiler operation can be reduced by reduction in _________
Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.
Exposure to SO 2 containing chimney gases results in the
Exposure to SO 2 containing chimney gases results in the
Inorganic impurities causing water pollution is
Inorganic impurities causing water pollution is
The type of bacteria which is active in trickling filter during biological treat
The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria.
Tri-sodium phosphate is used in boiler water treatment to reduce
Tri-sodium phosphate is used in boiler water treatment to reduce
The main type of sludge gas evolved during sewage treatment in Imhoff tank is
The main type of sludge gas evolved during sewage treatment in Imhoff tank is
Corrosion in boilers can be prevented by
Corrosion in boilers can be prevented by