Civil Engineering - Water Supply Engineering
Exercise :: Water Supply Engineering - Section 2
| 6. |
Percussion drilling is unsuitable in |
| A. |
unconsolidated sand | | B. |
unconsolidated gravel | | C. |
quick sand | | D. |
consolidated rocks. |
Answer: Option D
Explanation:
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| 7. |
Disinfection of water with ozone is not good because |
| A. |
it vanishes before water reaches the consumers | | B. |
it removes the colour, taste and odour from water as bacterias | | C. |
it adds taste to the water | | D. |
it is more efficient than chlorine in killing bacterias | | E. |
none of these. |
Answer: Option D
Explanation:
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| 8. |
An earth formation which, although porous and capable of absoring water does not provide an appreciable supply to wells, is known as |
| A. |
acquifer | | B. |
aquiclude | | C. |
aquifuge | | D. |
none of these. |
Answer: Option B
Explanation:
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| 9. |
Mathamoglobinemia, or blue baby disease is caused due to |
| A. |
chlorides | | B. |
nitrites | | C. |
nitrates | | D. |
sulphides. |
Answer: Option C
Explanation:
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| 10. |
The main process to purify water by filtration, is |
| A. |
mechanical straining | | B. |
flocculation and sedimentation | | C. |
biological metabolism | | D. |
electronic change | | E. |
all the above. |
Answer: Option E
Explanation:
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