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


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C. Diseases

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2.  The presence of hydrogen sulphide in water causes


   A. Softening

   B. Alkalinity

   C. Acidity

   D. Bad taste


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C. Acidity

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3.  Free ammonia in water should be limited to


   A. 1.5 ppm

   B. 0.15 ppm

   C. 15 ppm

   D. 5 ppm


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B. 0.15 ppm

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4.  Treatment of water may be done by


   A. CUSO4.7H2O

   B. Activated carbon

   C. Bromine

   D. Both A and B


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D. Both A and B

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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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C. Colloidal impurities

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