Acid regression stage of sludge digestion at a temperature 21°C extends over a period of______________?

Related Mcqs:

Aerobic bacterias___________________?

A. Flourish in the presence of free oxygen B. Consume organic matter as their food C. Oxidise organic matter in sewage D. All the above...

Pick up the correct statement from the following ?

A. The larger the sewer in size, more will be velocity B. The smaller the sewer in size, less will be velocity C. The larger the sewer in size, no deposition will take place D. The larger the sewer in size, deposition will take place...

A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is_____________________?

A. 2.30 m B. 2.40 m C. 2.45 m D. 2.50 m...

Oxidation process results in the formation of___________________?

A. Carbon dioxide B. Nitrates C. Sulphates D. All the above...

In septic tanks, decomposition of organic bacteria, is done by_____________________?

A. Anaerobic bacteria B. Aerobic bacteria C. Both types of bacterias D. None of these...