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Waste water Engineering Mock test – 4 || Civil Engineering Mock tests

Welcome to your Waste water Engineering Mock test - 4
Take an exciting test in Waste water Engineering
You have only 20 mins to complete the test (25 Questions)
Wish you all the best!!!

House connections to the laterals is generally made by

1 out of 25

Removal of oil and grease from sewage, is known

2 out of 25

The standard B.O.D. of water is taken for

3 out of 25

In olden days the type of section adopted in trunk and out fall sewers was

4 out of 25

In sewage, the solids in mg per litre is

5 out of 25

The small sewers are cleaned by

6 out of 25

If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is

7 out of 25

In 1000 kg of sewage, the total solids approximate

8 out of 25

The sewer which transports the sewage to the point of treatment, is called

9 out of 25

hydraulically equivalent, the relationship which holds good, is

10 out of 25

The coagulant widely used for sewage treatment, is

11 out of 25

Drop manholes at the junctions of sewer lines, are provided if

12 out of 25

The sewage discharge in a detritus tank of a treatment plant is 576 litres/sec with flow velocity of  0.2 m/sec. If the ratio of width to depth is 2, the depth is

13 out of 25

In septic tanks, decomposition of organic bacteria, is done by

14 out of 25

In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is

15 out of 25

Fresh sewage may become stale in

16 out of 25

Aerobic activity is maximum

17 out of 25

Sewer pipes need be checked for

18 out of 25

If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains

19 out of 25

For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

20 out of 25

The sewerage system originates from

21 out of 25

In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of  concrete is kept

22 out of 25

Rate of flow of sewage is generally assumed

23 out of 25

To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of

24 out of 25

The ratio of minimum hourly flow to the average flow of sewage is

25 out of 25

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