Waste Water Engineering Multiple Choice Questions

Waste Water Engineering

Question 1.

The effluent of a septic tank is

A.

 Fit for discharge into any open drain

B.

 Foul and contains dissolved and suspended solids

C.

 As good as that from a complete treatment

D.

 None of these

Explanation :

Explanation Not Provided

Question 2.

5 days-biochemical oxygen demand (BOD5) is taken at a temperature of

A.

 0°C

B.

 15°C

C.

 20°C

D.

 25°C

Explanation :

Explanation Not Provided

Question 3.

The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope

A.

 1 in 5

B.

 1 in 10

C.

 1 in 15

D.

 1 in 20

Explanation :

Explanation Not Provided

Question 4.

Drop manholes are the manholes

A.

 Without entry ladders

B.

 Without manhole covers

C.

 With depths more than 3.5 m

D.

 Having drains at different levels

Explanation :

Explanation Not Provided

Question 5.

For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of

A.

 100 cm

B.

 120 cm

C.

 140 cm

D.

 160 cm

Explanation :

Explanation Not Provided