Category: Waste Water Engineering

A. Manually
B. Mechanically
C. Hydraulically
D. Electrically

A. Degradation
B. Active decomposition
C. Recovery
D. Cleaner water

A. Alum
B. Ferric chloride
C. Ferric sulphate
D. Chlorinated copperas

A. Filtration process is used
B. Biological action is used
C. Neither A. nor B.
D. Both A. and B.

A. A jar
B. A breaker
C. A test tube
D. An Imhoff cone

A. 90 %
B. 95 %
C. 99 %
D. 9.9 %

A. 1.5
B. 2.0
C. 2.5
D. 3.0

A. CO
B. SO2
C. CO2
D. O3

A. 0°C
B. 15°C
C. 20°C
D. 25°C

A. 10 cm
B. 15 cm
C. 20 cm
D. All the above