41. For providing an Indian type W.C., the R.C.C. slabs in the toilet portion
42. In Chezy’s formula $${\text{V}} = {\text{C}}\sqrt {{\text{rs}}} $$ for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is
43. Hydraulic mean radius is
44. Hazen’s formula $${{\text{V}}_{\text{S}}} = 418\left( {{{\text{G}}_{\text{S}}} - {{\text{G}}_{\text{w}}}} \right){\text{d}}\left( {\frac{{3{\text{T}} + 70}}{{100}}} \right)$$ is used for the settlement velocity of the particles of diameter
45. The sewer which resists sulphide corrosion, is
46. The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called
47. No treatment of the sewage is given if dilution factor is
48. In septic tanks,
49. The maximum diameter of sewers adopted in the designs is
50. Which one of the following part of human body withstands minimum radiation?
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