Pathogens (or pathogenic bacterias) in water may cause___________________?

Related Mcqs:

Pick up the correct statement from the following ?

A. The sewer pipes of sizes less than 0.4 m diameter are designed as running full at maximum discharge B. The sewer pipes of sizes greater than 0.4 m diameter are designed as running 2/3rd or 3/4th full at maximum discharge C. The minimum design velocity of sewer pipes is taken as 0.8 m/sec D. … Pick up the correct statement from the following ?Read More...

Pick up the incorrect statement from the following ?

A. Septic tanks are horizontal continuous flow type of sedimentation tanks B. Septic tanks are generally provided a detention period of 12 to 36 hours C. Septic tanks are completely covered and high vent shafts are provided for the escape of foul gases D. None of these...

The spacing of bars for perforations in coarse screens used for the treatment of sewage, is ____________________?

A. 20 mm B. 30 mm C. 40 mm D. 50 mm...

For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed________________?

A. 1.5 B. 2.0 C. 2.5 D. 3.0...

As compared to fresh river water, sea water contains oxygen_________________?

A. 10% less B. 20% less C. 10% more D. 20% more...