Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?

Byadmin March 11, 2019August 29, 2021

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

Chemical Environmental Engineering

Fluorosis is caused due to the presence of excessive amount of ______________ in drinking water?

Fluorosis is caused due to the presence of excessive amount of ______________ in drinking water?

A. Mercury
B. Lead
C. Fluoride
D. Arsenic

Read More Fluorosis is caused due to the presence of excessive amount of ______________ in drinking water?
Chemical Environmental Engineering

Which of the following is a green house gas other than CO2 ?

Which of the following is a green house gas other than CO2 ?

A. Methane
B. Nitrous oxide
C. Chlorofluoro carbons (CFC)
D. All A., B. and C.

Read More Which of the following is a green house gas other than CO2 ?
Chemical Environmental Engineering

Disinfection of water is done to remove ______________________?

Disinfection of water is done to remove ______________________?

A. Color
B. Bad taste
C. Foul odour
D. Bacteria

Read More Disinfection of water is done to remove ______________________?
Chemical Environmental Engineering

Dissolved oxygen content in river water is around _____________ ppm?

Dissolved oxygen content in river water is around _____________ ppm?

A. 5
B. 100
C. 250
D. 500

Read More Dissolved oxygen content in river water is around _____________ ppm?
Chemical Environmental Engineering

‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?

‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?

A. Industrial chimney exhaust
B. Automobiles exhaust
C. Photochemical reaction in polluted atmosphere
D. Burning of domestic fuel

Read More ‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?
Chemical Environmental Engineering

Aerobic biological oxidation ponds used for the purification of polluted water__________________?

Aerobic biological oxidation ponds used for the purification of polluted water__________________?

A. Destroys/removes pathogen from the sewage
B. Is not very effective for non-biodegradable substances (e.g. ABS) containing effluents
C. Destroys/removes pathogen much more effectively if the sewage is chlorinated
D. All A., B. & C.

Read More Aerobic biological oxidation ponds used for the purification of polluted water__________________?

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