A. Characterisation of solid wastes
B. Organic concentration in gaseous effluents
C. Characterisation of liquid effluents
D. Characterisation of boiler feed water
Related Mcqs:
- The term Biological Oxygen Demand (BOD) is used in relation to ______________________?
A. Potable water
B. Cooling water
C. Distilled water
D. Industrial effluents - Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of _____________ metres?
A. 100
B. 1000
C. 400
D. 4000 - BOD of raw municipal sewage may be in the range of about _____________ mg/litre?
A. 1-2
B. 5-10
C. 150-300
D. 2000-3000 - The lowest layer of atmosphere is known as the_____________________?
A. Stratosphere
B. Troposphere
C. Ionosphere
D. None of these - Which of the following industries discharge mercury as a pollutant ?
A. Chloro-alkali industry
B. Tanneries
C. Beverage plant
D. Phosphoric acid plant - Arsenic pollutant is not generated in _______________ industries?
A. Tanneries
B. Glass & ceramic
C. Beverages
D. Any of these - Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly _____________ substances?
A. Radioactive
B. Organic
C. Inorganic
D. None of these - Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?
A. Chemical coagulation
B. Floatation & skimming
C. Centrifugation
D. Ultra filtration - The most commonly used chemical coagulant in water treatment is________________?
A. Ferrous sulphate
B. Alum
C. Lime
D. Hydrazine - The amount of chemical coagulant added for treatment of polluted water ______________ with increase in temperature of the polluted water to be treated?
A. Decreases
B. Increases
C. Remain constant
D. May increase or decrease; depends on the chemical characteristics of polluted water
