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- Question
Mostly used coagulant, is
Options- A. chlorine
- B. alum
- C. lime
- D. bleaching powder.
- Correct Answer
- alum
- 1. One degree of hardness of water means a content of salts of
Options- A. 10.25 mg/litre
- B. 12.25 mg/litre
- C. 14.25 mg/litre
- D. 16.25 mg/litre.
- E. 20 mg/litre. Discuss
- 2. Rapid gravity filter can only remove turbidity of water upto
Options- A. 15 to 25 gm/litre
- B. 25 to 30 gm/litre
- C. 30 to 35 cm/litre
- D. 35 to 40 gm/litre
- E. 50 gm/litre. Discuss
- 3. Hard water for public water supply is discarded because
Options- A. it consumes more soap
- B. it contains lot of turbidity
- C. it contains pathogenic bacterias
- D. it possesses bad taste and odour
- E. none of these. Discuss
- 4. The run off is affected by
Options- A. size of the basin
- B. shape of the basin
- C. elevation of the water shed
- D. all the above. Discuss
- 5. Pressure exerted by fully saturated air, is known
Options- A. partial pressure
- B. vapour pressure
- C. saturation vapour pressure
- D. saturation pressure
- E. (c) and (d) of the above. Discuss
- 6. If p is total internal pressure, d is diameter of pressure conduit and t is thickness of conduit, the Hoop's stress is
Options- A.
- B.
- C.
- D.
Discuss
- 7. Hard water contains
Options- A. calcium
- B. magnesium bicarbonates
- C. magnesium sulphate
- D. all the above. Discuss
- 8. After cleaning a slow sand filter, the filtered water is not used for
Options- A. 6 hours to 12 hours
- B. 12 hours to 18 hours
- C. 18 hours to 24 hours
- D. 24 hours to 36 hours
- E. 48 hours. Discuss
- 9. Hardness of water is caused due to
Options- A. calcium sulphate
- B. magnesium sulphate
- C. calcium nitrates
- D. calcium bicarbonates
- E. all the above. Discuss
- 10. Gravity conduits for carrying water from the source are
Options- A. canals
- B. flumes
- C. acqueducts
- D. all the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: 14.25 mg/litre
Correct Answer: 35 to 40 gm/litre
Correct Answer: it consumes more soap
Correct Answer: all the above.
Correct Answer: (c) and (d) of the above.
Correct Answer:
Correct Answer: all the above.
Correct Answer: 24 hours to 36 hours
Correct Answer: all the above.
Correct Answer: all the above.
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