House connections to the laterals is generally made by___________________?

Related Mcqs:

1. The presence of free ammonia in sewage, is detected by___________________?

   A. Boiling
   B. Adding potassium permanganate
   C. Adding sulphuric acid
   D. Phenol-di-sulphuric acid

2. Cavitation is caused by___________________?

   A. high velocity
   B. high pressure
   C. weak material
   D. low pressure
   E. low viscosity

3. For house drainage minimum gradient is__________________?

   A. 1 in 60
   B. 1 in 80
   C. 1 in 10
   D. 1 in 400

4. The coagulant which is generally not used for treating the sewage, is__________________?

   A. Alum
   B. Ferric chloride
   C. Ferric sulphate
   D. Chlorinated copperas

5. The grit chambers of sewage treatment plants, are generally cleaned after__________________?

   A. 2 days
   B. 7 days
   C. 12 days
   D. 14 days

6. The drop man holes are generally provided in sewers for____________________?

   A. Industrial areas
   B. Large town ships
   C. Hilly town ships
   D. Cities in plains

7. Rate of flow of sewage is generally assumed__________________?

   A. More than the rate of water supply
   B. Equal to the rate of water supply
   C. Less than the rate of water supply
   D. At 150 litres per capita

8. Before discharging the foul sewage into rivers, it is generally treated by_____________________?

   A. Screening
   B. Sedimentation
   C. Oxidation
   D. All the above

9. An inverted siphon is designed generally for____________________?

   A. One pipe
   B. Two pipes
   C. Three pipes
   D. Four pipes

10. The discharge per unit plan area of a sedimentation tank, is generally called________________?

    A. Over flow rate
    B. Surface loading
    C. Over flow velocity
    D. All the above