Top 250+ Solved Water and Wastewater Engineering MCQ Questions Answer

a. Bacterias

b. Suspended solids

c. Sediments

d. Hardness

a. Rivers

b. Seas

c. Lakes

d. None of these

a. Circular septic tanks

b. Rectangular septic tanks

c. Circular Imhoff double tanks with bottom hoppers

d. Circular Imhoff double storey tanks without bottom hoppers

a. 20 mm

b. 30 mm

c. 40 mm

d. 50 mm

a. Equal to 7

b. More than 7

c. Less than 7

d. Equal to zero

a. 3 m

b. 3.5 m

c. 4 m

d. 4.5 m

a. Stone ware pipes

b. Earthenware pipes

c. C.I. pipes

d. G.I. pipes

a. D' = 0.64 D

b. D' = 0.74 D

c. D' = 0.84 D

d. D' = 0.94 D

a. 0.9 cm

b. 1.2 m

c. 1.5 m

d. > 1.5 m

a. Sanitary sewage

b. Industrial waste

c. Storm sewage

d. None of these

a. Liberation of ammonia-formation of nitrites-formation of nitrates-liberation of nitrogen

b. Liberation of nitrogen-liberation of ammonia-formation of nitrites- formation of nitrates

c. Liberation of nitrogen-formation of nitrates-formation of nitrites-liberation of ammonia

d. Formation of nitrates-formation of nitrites-liberation of nitrates-liberation of nitrates

a. Lung cancer

b. Skin cancer

c. Bronchitis

d. Heart disorder

a. 10 cm

b. 15 cm

c. 20 cm

d. 25 cm

a. Carbondioxide (B) (C) (D)

b. Oxygen

c. Nitrogen

d. Sulphur-dioxide

a. Less than 0.01 mm

b. Less than 0.05 mm

c. Less than 0.1 mm

d. Greater than 0.1 mm