Fresh sewage is ______________ in nature?
Fresh sewage is ______________ in nature?
A. Acidic
B. Neutral
C. Alkaline
D. Highly acidic
Similar Posts
Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes_______________?
Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes_______________?A. Foaming
B. Odour nuisances
C. Undesirable plant growth
D. TurbidityInhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes___________________?
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes___________________?A. Asphyxiation (suffocation)
B. Shortness of breath
C. Tuberculosis
D. All A., B. and C.Tolerable limit of nitrogen oxides in air is _____________ ppm?
Tolerable limit of nitrogen oxides in air is _____________ ppm?A. 0.1
B. 1
C. 5
D. 25The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?
The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?A. Mercury
B. Brine
C. Phosphate
D. None of theseWhich of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?
Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?A. Smog & ozone
B. Hydrogen fluoride & nitrogen oxides
C. Sulphur dioxide & spray of weed killers
D. Carbon monoxideHigh noise level in a chemical plant can be controlled by the_________________?
High noise level in a chemical plant can be controlled by the_________________?A. Suppression of noise at the source itself
B. Path control of noise
C. Protection of operating personnel
D. All A., B. & C.