COD of raw municipal sewage may be in the range of about _____________ mg/litre?

Related Mcqs:

Fresh sewage is ______________ in nature?

A. Acidic B. Neutral C. Alkaline D. Highly acidic...

Sulphur dioxide present in the industrial chimney exhaust gases causes____________________?

A. Respiratory & lung disease B. Reduction in plant’s productivity owing to acid rain C. Corrosion of building materials D. All A., B. and C....

Main pollutants released from iron & steel industry is__________________?

A. CO, CO2 & SO2 B. H2S, NO & SO3 C. CO2, H2S & NO2 D. SO3, NO2 & CO2...

Maximum permissible turbidity in potable water is _____________ ppm?

A. 1 B. 10 C. 250 D. 1000...

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....