Related Questions

Imhoff cone is used to determine
A Settleable solids
B Suspended solids
C Dissolved solids
D None of these
The working conditions in imhoff tanks are
A Aerobic only
B Anaerobic only
C Aerobic in lower compartment and anaerobic in upper compartment
D Anaerobic in lower compartment and aerobic in upper compartment
In case of Imhoff tanks,
A The shape is rectangular
B Detention period is 2 hours
C The velocity of flow is restricted to 0.30 m/minute
D All the above
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
A Filtration
B Digestion
C Sedimentation
D Both B and C
The main type of sludge gas evolved during sewage treatment in Imhoff tank is
A CO2
B CH4
C CO
D H2
A sector of a circle of radius 5 cm is recast into a right circular cone of height 4 cm. What is the volume of the resulting cone?
A 12π cm2
B 33π cm3
C 32π cm2
D 4π cm2
The height and weighs of a solid cone are 6 cm and 2.7 kg. The weighs of a similar cone of 5 cm height is _____ .
A 9.75 kg
B 9.25 kg
C 6.25 kg
D 5.75 kg
The height of a cone is 24 cm and the area of the base is 154 cm2. What is the curved surface area (in cm2) of the cone?
A 484
B 550
C 525
D 515
If a cylinder of radius 7 cm and height 9 cm is melted and constructed into a cone of the same radius, what will be the height of this cone?
A 54 cm
B 9 cm
C 27 cm
D 13.5 cm
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
A Equal to
B Double
C Three to four times
D Five to six times

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