Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N₂ in contaminated air at which it acts as a natural asphyxant is ≥ __________ percent.
Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N₂ in contaminated air at which it acts as a natural asphyxant is ≥ __________ percent.
Radioactive substances present in the polluted water stream can be removed by
Radioactive substances present in the polluted water stream can be removed by
Presence of excess flourine in water causes
Presence of excess flourine in water causes
TLV of lead for public sewer/waste water is about __________ ppm.
TLV of lead for public sewer/waste water is about __________ ppm.
Which of the following is not an air pollutant?
Which of the following is not an air pollutant?
Higher concentration of nitrogen dioxide in atmospheric air causes
Higher concentration of nitrogen dioxide in atmospheric air causes
The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?
The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?
