The phenolic compounds in public water supply should not be more than_______________?

Related Mcqs:

1. The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about______________?

   A. 0.01 to 0.05 ppm
   B. 0.05 to 0.5 ppm
   C. 0.5 to 1.0 ppm
   D. 1.0 to 5.0 ppm

2. The length of rectangular sedimentation tank should not be more than_______________?

   A. B
   B. 2B
   C. 4B
   D. 8B

   where B is the width of the tank

3. Which of the following chemical compounds can be used for dechlorination of water ?

   A. carbon dioxide
   B. bleaching powder
   C. sulphur dioxide
   D. chloramines

4. Which of the following compounds is widely used for algae control ?

   A. sodium sulphate
   B. copper sulphate
   C. sodium chloride
   D. calcium chloride

5. Assertion A : The consumption of water increases with increase in the distribution pressure. Reason R : Higher distribution pressure causes more loss and waste of water. Select your answer according to the coding system given below?

   A. Both A and R are true and R is the correct explanation of A
   B. Both A and R are true but R is not the correct explanation of A
   C. A is true but R is false
   D. A is false but R is true

6. The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is________________?

   A. circle method
   B. equivalent pipe method
   C. electrical analysis method
   D. Hardy cross method

7. The most common cause of acidity in water is_______________?

   A. carbon dioxide
   B. oxygen
   C. hydrogen
   D. nitrogen

8. The suitable method for disinfection of swimming pool water is________________?

   A. ultra violet rays treatment
   B. lime treatment
   C. by using potassium permanganate
   D. chlorination

9. A pipe which is installed in the house drainage to preserve the water seal of traps is called______________?

   A. vent pipe
   B. antisiphonage pipe
   C. waste pipe
   D. soil pipe

10. Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system ?

    A. circle method
    B. equivalent pipe method
    C. Hardy cross method
    D. electrical analysis method