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- Question
Carbonates in water produce
Options- A. temporary hardness
- B. permanent hardness
- C. acidity
- D. alkanity.
- Correct Answer
- temporary hardness
- 1. Pick up the wrong nominal internal diameter of cast iron (spun) pipes in mm from the following :
Options- A. 300
- B. 400
- C. 500
- D. 550
- E. 600 Discuss
- 2. Pick up the correct statement from the following :
Options- A. For determination of small colour intensities, tintometer is generally used
- B. The odour of water sample is generally measured by a term called odour intensity
- C. The colour of water sample may be detected by Nessler tube
- D. Specific conductivity of water measures the amount of dissolved salt
- E. All the above. Discuss
- 3. To control the growth of algae in reservoirs, the compound which is used, is
Options- A. bleaching powder
- B. copper sulphate
- C. lime solution
- D. alum solution
- E. all the above. Discuss
- 4. Hardness of water can be removed by boiling if it is due to
Options- A. calcium bicarbonates
- B. calcium sulphates
- C. calcium chloride
- D. calcium nitrates. Discuss
- 5. If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is
Options- A.
- B.
- C.
- D.
- E. none of these. Discuss
- 6. Well treated water is generally supplied for
Options- A. domestic use
- B. commercial use
- C. public use
- D. waste water
- E. all the above. Discuss
- 7. The formula Q = P - K[1.8T + 32] in which Q is runoff, P is annual rain fall in cm, T is mean annual temperature in centigrades and K is a constant, is known
Options- A. Justin's formula
- B. Khosla's formula
- C. English formula
- D. Vermule's formula. Discuss
- 8. Pick up the incorrect statement from the following :
Options- A. Water disinfected with ozone is free from any odour
- B. Ozone removes bacterias as well as colour and odour
- C. ozonised water becomes tasteless
- D. None of these. Discuss
- 9. A well is considered to be good if it is sunk into
Options- A. Clay
- B. Sand
- C. Coarse gravel
- D. Silt. Discuss
- 10. Gravity conduits
Options- A. carry water under gravity
- B. follow the hydraulic gradient line
- C. are carried on trestles in valleys and depressions
- D. are carried through tunnels in deep cuttings
- E. All the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: 550
Correct Answer: All the above.
Correct Answer: copper sulphate
Correct Answer: calcium bicarbonates
Correct Answer:
Correct Answer: all the above.
Correct Answer: Khosla's formula
Correct Answer: ozonised water becomes tasteless
Correct Answer: Coarse gravel
Correct Answer: All the above.
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