Water Supply Engineering Questions (W6)

In this post, I will share some important questions which are frequently asked in competitive examinations such as SSC, UPSC and state PSCs.




  1. Priming of a centrifugal pump is necessary...


    1. If it is located above reservior level
    2. If it is located below reservior level
    3. If it is located at reservior level
    4. If delivery head is high

    View Answer
    Answer: a

  2. The pipe joint commonly used in puming station is


    1. flexible joint
    2. expansion joint
    3. flanged joint
    4. socket and spigot joint

    View Answer
    Answer: c

  3. If the diameter of the main pipe is taken less than economical diameter then ...


    1. head loss will be high
    2. cost of pipe will be high
    3. cost of pumping will be more
    4. all of the above

    View Answer
    Answer: d

  4. As per IS:10500-2012, the acceptable limit of pH of Drinking water is ...


    1. 6.5-8.5
    2. 6.0-8.0
    3. 7.0-7.5
    4. 6.0-7.0

    View Answer
    Answer: a

  5. As per IS:10500-2012, what are the acceptable limit and permissible limit of "Floride" in Driking water in mg/l?


    1. 1.5 and 1.0 respectively
    2. 1.0 and 1.5 respectively
    3. 1.0 and 1.0 respectively
    4. 1.5 and 1.5 respectively

    View Answer
    Answer: b

  6. As per IS:10500-2012, the permissible limit of "Nitrate" in mg/l is ...


    1. zero
    2. 45
    3. 0.45
    4. 4.5

    View Answer
    Answer: a

  7. As per IS:10500-200, the permissible limit of total hardness as $CaCO_3$ in mg/l is ...


    1. 200
    2. 400
    3. 600
    4. 800

    View Answer
    Answer: c

  8. The disease "Meathaemoglobinaemia" is caused when drinking water supply contains high concentrations of...


    1. Fluoride
    2. Iron
    3. Nitrite
    4. Nitrate

    View Answer
    Answer: d

  9. The micro-organism group E-coli is used as an indicator of faecal contamination of water because ...


    1. E-Coli is a known pathogen
    2. it is very easy to detect
    3. they are discharged along with faeces in large numbers
    4. all of the above

    View Answer
    Answer: c

  10. Pathogenic organisms may be found in contaminated waters and are responsible for diseases like ...


    1. typhoid fever
    2. infectious hepatitis
    3. gastro enteritis
    4. all of the above

    View Answer
    Answer: d






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