For evaporation and measurement of settable solids, the apparatus used, is________________?

Related Mcqs:

1. Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is ?

   A. Centrifugal pump
   B. Pneumatic ejector
   C. Reciprocating pump
   D. None of these

2. In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is_________________?

   A. 2.25
   B. 2.50
   C. 2.55
   D. 2.65

3. In sewage, the solids in mg per litre is__________________?

   A. 100 to 500
   B. 500 to 1000
   C. 1000 to 1500
   D. 1500 to 2000

4. In 1000 kg of sewage, the total solids approximate___________________?

   A. 0.5 to 1.0 kg
   B. 1 kg to 2.0 kg
   C. 5 kg to 7.5 kg
   D. 7.5 kg to 10 kg

5. Operation of McLeod gauge used for low pressure measurement is based on the principle of_____________________?

   A. gas law
   B. Boyle’s law
   C. Charle’s law
   D. Pascal’s law
   E. McLeod’s law

6. Pitot tube is used for measurement of__________________?

   A. pressure
   B. flow
   C. velocity
   D. dsscharge
   E. viscosity

7. The gas evolved in sewers is________________?

   A. Carbondioxide
   B. Hydrogen sulphide
   C. Methane
   D. All of these

8. During purification process of sewage the gas given off, is________________?

   A. Carbon dioxide
   B. Hydrogen
   C. Ammonia
   D. All the above

9. The flow velocity in detritus tanks is________________?

   A. 0.05 m/sec
   B. 0.09 m/sec
   C. 1.25 m/sec
   D. None of these

10. The factor responsible for purification of sewage in river is________________?

    A. Hydrology
    B. Dissolved oxygen in water
    C. Temperature
    D. All the above