- (A) 4 mm/hr
- (B) lOmm/hr
- (C) 20 mm/hr
- (D) 40 mm/hr
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- (A) much greater than 1
- (B) slightly less than 1
- (C) equal to 1
- (D) slightly greater than 1
- (A) given in the direction of natural slope of ground
- (B) given in the direction opposite to natural slope of ground
- (C) zero
- (D) steeper than 1 in 20
- (A) equal to rainfall
- (B) rainfall + DWF
- (C) rainfall + 2 DWF
- (D) rainfall + 6 DWF
- (A) less strength
- (B) difficulty in construction
- (C) difficulty in transportation due to heavy weight
- (D) less life
- (A) is economical than circular section
- (B) provides self cleansing velocity at low discharges
- (C) is more stable than circular section
- (D) is easy to construct
- (A) circular brick sewer
- (B) circular cast iron sewer
- (C) semi-elliptical sewer
- (D) horse-shoe type sewer
- (A) acidic and alkaline
- (B) alkaline and acidic
- (C) both acidic
- (D) both alkaline
- (A) higher temperature
- (B) sunlight
- (C) satisfying oxygen demand
- (D) none of the above
- (A) heavier
- (B) stronger
- (C) costlier
- (D) less susceptible to corrosion
