Related Mcqs:

1. If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to________________?

   A. total alkalinity
   B. total hardness
   C. total hardness – total alkalinity
   D. non carbonate hardness

2. Average rate of water consumption perhead per day as per Indian Standard is______________?

   A. 100 litres
   B. 135 litres
   C. 165 litres
   D. 200 litres

3. If Biochemical oxygen demand (BOD. of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is_________________?

   A. 1000
   B. 4000
   C. 100000
   D. 400000

4. The rate of filtration in slow sand filters in million litres per day per hectare is about_____________?

   A. 50 to 60
   B. 100 to 150
   C. 500 to 600
   D. 1400 to 1500

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. Which of the following causes a decrease in per capita consumption ?

   A. use of metering system
   B. good quality of water
   C. better standard of living of the people
   D. hotter climate

7. The per capital consumption of a locality is affected by_________________?

   1) climatic conditions
   2) quality of water
   3) distribution pressure
   The correct answer is?

   A. only (1)
   B. both (1) and (2)
   C. both (1) and (3)
   D. all (1), (2) and (3)

8. Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about_______________?

   A. 10 to 25
   B. 50
   C. 75
   D. 100

9. The treatment of water with bleaching powder is known as________________?

   A. prechlorination
   B. super chlorination
   C. dechlorination
   D. hypochlorination

10. 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