Civil Engineering Mcqs — Test 42
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Question 1
The velocity of flow does not depend on_______________?
Question 2
The effect of increasing diameter of sewer on the self cleansing velocity is_____________?
Question 3
The type of sewer which is suitable for both combined and separate system is_____________?
Question 4
The pathogens can be killed by_______________?
Question 5
Sewage treatment units are normally designed for______________?
Question 6
Standard BOD is measured at________________?
Question 7
The rate of BOD exerted at any time is_____________?
Question 8
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___________?
Question 9
The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?
Question 10
Facultative bacteria are able to work in________________?