pH value of sludge during alkaline regression stage, is__________________?

Related Mcqs:

No treatment of the sewage is given if dilution factor is_____________?

A. Less than 150 B. Between 150 to 200 C. Between 200 to 300 D. More than 500...

Hume steel pipes are__________________?

A. Steel pipes B. Steel shell coated from inside with cement mortar C. Steel shell coated from outside with cement mortar D. Both B. and C....

Chlorination of water is done for the removal of____________________?

A. Bacterias B. Suspended solids C. Sediments D. Hardness...

Facultative bacteria survive in_____________________?

A. The presence of oxygen B. The absence of oxygen C. Both cases A. and B. D. Neither A. nor B....

The presence of free ammonia in sewage, is detected by___________________?

A. Boiling B. Adding potassium permanganate C. Adding sulphuric acid D. Phenol-di-sulphuric acid...