Pick up the incorrect statement from the following regarding fire hydrants
Answer
Correct Answer:
None of these.
Note: This Question is unanswered, help us to find answer for this one
The specific retention is least in case of
Answer
Correct Answer:
Coarse gravel.
Note: This Question is unanswered, help us to find answer for this one
In slow sland filters, the turbidity of raw water can be removed only up to
Answer
Correct Answer:
60 mg/litre
Note: This Question is unanswered, help us to find answer for this one
The maximum depth of sedimentation tanks is limited to
Answer
Correct Answer:
6 m.
Note: This Question is unanswered, help us to find answer for this one
Water supply system includes
Answer
Correct Answer:
Entire arrangement from source to distribution.
Note: This Question is unanswered, help us to find answer for this one
Aeration of water is done to remove
Answer
Correct Answer:
Odour
Note: This Question is unanswered, help us to find answer for this one
Pick up the correct statement from the following:
Answer
Correct Answer:
Excess quantities of iron and manganese in water, cause discolouration of clothes
Note: This Question is unanswered, help us to find answer for this one
By boiling water, hardness can be removed if it is due to
Answer
Correct Answer:
Calcium bicarbonate
Note: This Question is unanswered, help us to find answer for this one
The transitional middle portion of a logistic curve follows
Answer
Correct Answer:
A constant rate.
Note: This Question is unanswered, help us to find answer for this one
Economic height of a dam is the height corresponding to which
Answer
Correct Answer:
Cost of the dam per unit of storage is minimum
Note: This Question is unanswered, help us to find answer for this one
The least thickness of class B cast iron (spun) pipe, is
Answer
Correct Answer:
8.6 mm
Note: This Question is unanswered, help us to find answer for this one
Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be
Answer
Correct Answer:
Nil
Note: This Question is unanswered, help us to find answer for this one
Turbidity of raw water is a measure of
Answer
Correct Answer:
Suspended solids
Note: This Question is unanswered, help us to find answer for this one
Manholes along the mains from the source to a city are provided at 500 m intervals in
Answer
Correct Answer:
Steel pipes
Note: This Question is unanswered, help us to find answer for this one
If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is
Answer
Correct Answer:
2880 kilo litres
Note: This Question is unanswered, help us to find answer for this one
Corrosion of well pipes may not be reduced by
Answer
Correct Answer:
Using screens having larger area of openings
Note: This Question is unanswered, help us to find answer for this one
Water supply includes
Answer
Correct Answer:
Collection, transportation and treatment of water
Note: This Question is unanswered, help us to find answer for this one
Average annual rainfall at any station is the average of annual rainfall over a period of
Answer
Correct Answer:
35 years.
Note: This Question is unanswered, help us to find answer for this one
Time of concentration
Answer
Correct Answer:
Time taken for the storm water to travel from the most remote point to the drain.
Note: This Question is unanswered, help us to find answer for this one
Acidity in water is caused due to
Answer
Correct Answer:
Mineral acids
Note: This Question is unanswered, help us to find answer for this one