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- Question
For complete stabilisation of organic matter in polluted water, it takes
Options- A. 5 days
- B. 10 days
- C. 20 days
- D. 30 days
- E. 40 days.
- Correct Answer
- 30 days
- 1. Suction lift of a pump depends upon
Options- A. atmospheric pressure
- B. water temperature
- C. velocity of water in suction pipe
- D. frictional losses
- E. all the above. Discuss
- 2. For 3.25 x 10-2 cumecs discharging from a well, a pump is installed to lift water against a total head of 30 m. The minimum required horse power, is
Options- A. 10 H.P.
- B. 15 H.P.
- C. 18 H.P.
- D. 20 H.P.
- E. 25 H.P. Discuss
- 3. Low turbidity of water is detected by
Options- A. Turbidity tube
- B. Jackson turbidity meter
- C. Baylis turbidimeter
- D. Hellipe turbidimeter
- E. None of these. Discuss
- 4. At break point of chlorination,
Options- A. chlorine is used to oxidise
- B. residual chloride is zero
- C. residual chloride is maximum
- D. residual chlorine reappears. Discuss
- 5. Pick up the correct statement from the following :
Options- A. Copper pipes are highly resistant to acidic and alkaline water
- B. Wrought iron pipes are lighter than cast iron pipes
- C. Wrought iron pipes corrode quickly and are less durable
- D. Wrought iron pipes coated with zinc, are called galvanised iron pipes
- E. All the above. Discuss
- 6. Capacity of soil to absorb moisture, is generally known as
Options- A. permeability
- B. porosity
- C. infiltration capacity
- D. perviousness. Discuss
- 7. Pick up the correct statement from the following :
Options- A. The volume of underground water extracted by gravity drainage from a saturated soil, is known as yield
- B. The ratio of volume drained to the total volume of material drained, is known as specific yield
- C. The volume of water retained by the soil against the pull of gravity, is called specific retention or field capacity
- D. The sum of specific yield and specific retention, is equal to porosity
- E. All the above. Discuss
- 8. Silt storage is the same as
Options- A. dead storage
- B. live storage
- C. effective storage
- D. none of these. Discuss
- 9. Perched acquifers generally occur
Options- A. below water table
- B. above water table
- C. in acquicludes
- D. in artesian acquifers
- E. none of these. Discuss
- 10. Pick up the incorrect statement from the following :
Options- A. The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration in water
- B. Higher value of pH means lower hydrogen ion concentration
- C. Lower value of pH means higher hydrogen ion contraction
- D. Lower value of pH gives alkaline solution
- E. None of these. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: all the above.
Correct Answer: 20 H.P.
Correct Answer: Baylis turbidimeter
Correct Answer: residual chlorine reappears.
Correct Answer: All the above.
Correct Answer: infiltration capacity
Correct Answer: All the above.
Correct Answer: dead storage
Correct Answer: above water table
Correct Answer: Lower value of pH gives alkaline solution
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