During sewage treatment, the sewage is subjected to ______________ treatment in Imhoff tank?

Related Mcqs:

Which of the following is an adsorbent for removal of nitrogen oxides from gas/air ?

A. Active carbon B. Silica gel C. Bog iron (iron oxide) D. Pulverised limestone...

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....

Inhalation of silica dust causes a disease called__________________?

A. Bronchitis B. Silicosis C. Pneumoconiosis D. None of these...

‘Pneumoconiosis’ is a disease caused by the inhalation of ______________ dust?

A. Coal B. Uranium ore C. Iron ore D. Lime...

Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?

A. Acts as a green house gas thereby raising earth’s temperature B. Causes asphyxia C. Causes increase in sea level D. Enhances the green house effect...