In trickling filter, B.O.D. is reduced to___________________?
In trickling filter, B.O.D. is reduced to___________________?
A. 30 to 40%
B. 40 to 60%
C. 60 to 80%
D. 80 to 90%
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In a trickling filter_________________?
In a trickling filter_________________?A. Filtration process is used
B. Biological action is used
C. Neither A. nor B.
D. Both A. and B.The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is________________________?
The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is________________________?A. 20 cm
B. 25 cm
C. 40 cm
D. 50 cmLead caulked joints are used for laying____________________?
Lead caulked joints are used for laying____________________?A. Stone ware pipes
B. Earthenware pipes
C. C.I. pipes
D. G.I. pipesAggregation of individuals formed for the purpose of conducting a business and recognized by law as a fictitious person is called ________________________?
Aggregation of individuals formed for the purpose of conducting a business and recognized by law as a fictitious person is called ________________________?A. Partnership
B. Investors
C. Corporation
D. StockholdersIf is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, Is_____________________?
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, Is_____________________?A. 1.250 D
B. 1.350 D
C. 1.425 D
D. 1.625 DThe time oscillation of a floating body with increase in metacentric height will be________________?
The time oscillation of a floating body with increase in metacentric height will be________________?A. same
B. higher
C. lower
D. lower/higher depending on weight of body
E. unpredictable