48.

49.

50.

51.

52.

58.

54,

55.

If ¢, is the optimistic time, ¢

7
time, then the expected time of occurrence of an activity is :

is the pessimistic time and ¢, is the most probable

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4 8
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(0) ಕ ರ್ಟ D) பக்க

Which of the statements given below is not correct :
When there is a dispute in a construction site,
(A) The dispute must be submitted initially to the site Engineer for decision,
before referring to arbitration
(B) The contractor has to stop the work till the settlement of dispute
(C) All actions related thereto should be recorded and referred for future
negotiations and agreements
(D) A meeting must be held between the superintendent and union leader

The planned or systematic actions necessary to provide enough confidence that a
product or service will satisfly the given requirements is called :

(A) Quality control (B) Quality improvement
(¢) Quality Assurance (D) Quality Audit
The Manning’s formula is given by the expression:
@A) v- प © ೪-೨-೮೪೫5
(0) V-=8347RS* (2) ೫ = 0.86८.2९०. 5०५
Detention period of grit chambers is kept as:
(^) 12 hours (B) 5 minutes
(C) 24 hours (D) 1 minute
The gas from sludge digestion tank is mainly composed of:
(A) Nitrogen (B) Carbon dioxide
(C) Hydrogen Sulphide (D) Methane

A pipe which is installed in the house drainage to preserve the water seal of traps is
called:

(A) Vent pipe (B) Anti-Siphonage pipe

(C) Waste pipe (D) Soil pipe

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) 3800 ppm (D) 400 ppm

9 013/2020