Water Supply Engineering - Water Supply Engineering objective questions and answers

1.  The presence of bacteria in water causes

   A. Hardness

   B. Alkalinity

   C. Diseases

   D. Bad taste

2.  The presence of hydrogen sulphide in water causes

   A. Softening

   B. Alkalinity

   C. Acidity

   D. Bad taste

3.  Free ammonia in water should be limited to

   A. 1.5 ppm

   B. 0.15 ppm

   C. 15 ppm

   D. 5 ppm

4.  Treatment of water may be done by

   A. CUSO₄.7H₂O

   B. Activated carbon

   C. Bromine

   D. Both A and B

5.  The colour in water is generally due to

   A. Suspended impurities

   B. Dissolved impurities

   C. Colloidal impurities

   D. None of the above

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