Related Questions

Defining green banking is relatively easy. It means promoting environment -friendly practices and reducing your carbon footprint from your banking activities. This comes in many forms : using online banking instead of branch banking; paying bills online, opening up CDs (certificates of deposit) and money market accounts at online banks instead of large multi-branch banks. A green bank takes the biggest steps to support local green initiatives. Any combination of the above personal banking practices can help the environment. In this respect, online banks and smaller community banks have better track records than larger banks .However, these larger banks may be induced to go green . According to the passage, larger, multi -branch banks .
A can never become green banks .
B can become green banks if they reduce the number of branches and eliminate the use of paper .
C can become green banks if they can greatly reduce or eliminate carbon footprint form their banking activities.
D can become green banks if they support local green initiatives
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as
A 4.5 to 6.0
B 6.5 to 8.0
C 8.5 to 10.0
D 10.5 to 12.0
For normal sludge, the value of sludge index for Indian conditions is
A 0 to 50
B 50 to 150
C 150 to 350
D 350 to 500
Which of the following is the most common pump for pumping either raw sewage or sludge?
A Electromagnetic pump
B Centrifugal pump
C Reciprocating pump
D Gear pump
The main type of sludge gas evolved during sewage treatment in Imhoff tank is
A CO2
B CH4
C CO
D H2
Sewage sludge is __________ type of non-Newtonion fluid.
A Dilatant
B Bingham plastic
C Pseudo plastic
D None of these
Sewage sludge is an example of the __________ fluid.
A Bingham plastic
B Newtonion
C Pseudoplastic
D Dilatent
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
A Filtration
B Digestion
C Sedimentation
D Both B and C
Fine grit present in sewage is removed in the __________ during sewage treatment.
A Grit chamber
B Detritus tank
C Trickling filter
D Skimming tank
__________ substances present in sewage are removed in grit chamber during sewage treatment.
A Organic
B Fatty
C Inorganic
D Dissolved

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