A. Phenol and cyanide
B. Chlorine
C. Alkalis
D. Suspended solids
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Related Mcqs:
- Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes_________________?
- A. Paralysis of muscles & loss of appetite B. Nervous depression C. Gastritis and diarrhea D. All A., B. and C....
- Iron & manganese present as pollutant in water cannot be removed by__________________?
- A. Ion exchange process B. Oxidation followed by settling & filtration C. Lime soda process or manganese zeolite process D. Chlorination...
- The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by_________________?
- A. Biological oxygen pond B. Aerated lagoons C. Trickling filters D. Gravity separator having oil skimming devices...
- The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?
- A. Chlorine B. Alkalis C. Benzene hexachloride D. Alkyl benzene sulphonate (ABS)...
- There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
- A. Mercury B. Arsenic C. Aluminium D. Lead...
- Which of the following is not a weightless pollutant ?
- A. SPM B. Thermal pollution C. Radioactive rays D. Noise pollution...
- Which of the following industries discharge mercury as a pollutant ?
- A. Chloro-alkali industry B. Tanneries C. Beverage plant D. Phosphoric acid plant...
- Which of the following is the most severe air pollutant ?
- A. Hydrocarbons B. NOx C. SO2 D. CO...
- Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?
- A. NOx B. Hg C. SO2 D. F...
- Which of the following is a secondary air pollutant ?
- A. Photochemical smog B. Sulphur dioxide C. Nitrogen dioxide D. Dust particles...
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