The hourly variation factor is usually taken as______________?

Related Mcqs:

The length of rectangular sedimentation tank should not be more than_______________?

A. B B. 2B C. 4B D. 8B where B is the width of the tank...

In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be___________?

A. 100 ppm B. 200 ppm C. 300 ppm D. 400 ppm...

For normal sludge, the value of sludge index for Indian conditions is________________?

A. 0 to 50 B. 50 to 150 C. 150 to 350 D. 350 to 500...

The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is_________________?

A. separate system B. combined system C. partially separate system D. partially combined system...

Period of cleaning of slow sand filters is about________________?

A. 24 – 48 hours B. 10-12 days C. 2-3 months D. 1-2 year...