The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called_______________?

Related Mcqs:

1. The liquid wastes from kitchens, bath rooms and wash basins, is not called________________?

   A. Liquid waste
   B. Sullage
   C. Sewage
   D. None of these

2. If the flame of a miner’s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains_______________?

   A. Hydrogen sulphide
   B. Carbon dioxide
   C. Methane
   D. Oxygen

3. The peoperty by virtue of which a liquid opposes relative motion between its different layers is called_________________?

   A. surface tension
   B. co-efficient of viscosity
   C. viscosity
   D. osmosis
   E. cohesion

4. For design purposes, the normal rate of infiltration of ground water into the sewer, is___________________?

   A. 500 litres/km/cm
   B. 1000 litres/km/cm
   C. 1500 litres/km/cm
   D. 2000 litres/km/cm

5. For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of___________________?

   A. 100 cm
   B. 120 cm
   C. 140 cm
   D. 160 cm

6. Assertion A.: A free board of 0.3 m is provided above the top sewage line in septic tanks. Reason (R): It helps to accommodate the scum in the septic tank_________________?

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

7. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be ___________________?

   A. 2 meters of water column
   B. 3 meters of water column
   C. 3.5 meters of water column
   D. 4 m of water column
   E. none of the above

8. In sewage having fully oxidised organic matter, the nitrogen exists in the form of________________?

   A. Nitrites
   B. Nitrates
   C. Free ammonia
   D. Aluminoid nitrogen

9. What is the simplest form of business organization ?

   A. Sole proprietorship
   B. Partnership
   C. Enterprise
   D. Corporation

10. The flow back of profit plus depreciation form a given project is called ___________________?

    A. Capital recovery
    B. Cash flow
    C. Economic return
    D. Earning value