The main constituents of gas generated during the anaerobic digestion

1.	The main constituents of gas generated during the anaerobic digestion of sewage sludge are :
A.	carbon dioxide and methane
B.	methane and ethane
C.	carbon dioxide and carbon monoxide
D.	carbon monoxide and nitrogen
Answer» B. methane and ethane

Discussion

No Comment Found

Related MCQs

A borrow pit soil has a dry density of 17 kN/m. How many cubic meters of this soil will be required to construct an embankment of 100 m volume with a dry density of 16 kN/m.
The ultimate bearing capacity of a soil is 300 kN/m. The depth of foundation is 1 m and unit weight of soil is 20 kN/m. Choosing a factor of safety of 2.5, the net safe bearing cacpacity is
The flow of water (mass density = 1000 kg/m and kinematic viscosity = 10 m/s) in a commercial pipe, having equivalent roughness as 0.12 mm, yields an average shear stress at the pipe boundary = 600 N/m. The value of /δ' (δ' being the thickness of laminar sub-layer) for this pipe is
Water flows at a rate of 10 m/s in a rectangular channel 3 m wide. The critical depth of flow is
The span () to be loaded uniformly for maximum positive (upward) reaction at support , as shown in the figure below, is (are)
The deflection of a cantilever beam at free end applied with a moment at the same point is :
A circular sewer 2 m diameter has to carry a discharge of 2 m/s when flowing nearly full. What is the minmum required slope to initiate the flow ? (Assume Manning's = 0.015)
For a highway with design speed of 100 kmph, the safe overtaking sight distance is (assume accelerations as 0.53 m/sec)
An isolated beam is used as a walkway. The beam is simply supported with an effective span of 6 m. The effective width of flange, for the cross-section shown in the below figure is
The stress-strain diagram for two materials A and B is shown below. The following statements are made based on this diagram : With reference to the above statements, which of the following applies ?

The main constituents of gas generated during the anaerobic digestion of sewage sludge are :

Discussion

No Comment Found

Related MCQs

Reply to Comment