Waste Water Engineering

A. Carbondioxide
B. Oxygen
C. Nitrogen
D. Sulphur-dioxide

A. 2.30 m
B. 2.40 m
C. 2.45 m
D. 2.50 m

A. Lung cancer
B. Skin cancer
C. Bronchitis
D. Heart disorder

A. Sanitary sewage
B. Industrial waste
C. Storm sewage
D. None of these

A. The larger the sewer in size, more will be velocity
B. The smaller the sewer in size, less will be velocity
C. The larger the sewer in size, no deposition will take place
D. The larger the sewer in size, deposition will take place

A. 100
B. 1000
C. 5000
D. 10000

A. 0.9 cm
B. 1.2 m
C. 1.5 m
D. > 1.5 m

A. In treated sewage, 4 ppm of D.O. is essential
B. Only very fresh sewage contains some dissolved oxygen
C. The solubility of oxygen in sewage is 95% that is in distilled water
D. All the above

A. Stone ware pipes
B. Earthenware pipes
C. C.I. pipes
D. G.I. pipes

A. 50 ppm
B. 100 ppm
C. 150 ppm
D. 200 ppm