Before discharging the foul sewage into rivers, it is generally treated by

The receptionist at a veterinary clinic reviewed the office records and found that 3 out of every 8 animals treated at the clinic during the last 4 months were cats. At this rate, how many cats will be treated during the next 12 weeks if a total 288 animals are treated ?

A

108

B

96

C

36

D

24

During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.

A

Filtration

B

Digestion

C

Sedimentation

D

Both B and C

Fine grit present in sewage is removed in the __________ during sewage treatment.

A

Grit chamber

B

Detritus tank

C

Trickling filter

D

Skimming tank

__________ substances present in sewage are removed in grit chamber during sewage treatment.

A

Organic

B

Fatty

C

Inorganic

D

Dissolved

Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?

A

Centrifugal pump

B

Pneumatic ejector

C

Reciprocating pump

D

None of these

Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

A

H₂

B

CH₄

C

CO₂

D

N₂

Which of the following pumps is used to pump sewage solids with liquid sewage without clogging the pump is?

A

Centrifugal pump

B

Pneumatic ejector

C

Reciprocating pump

D

None of these

Which step should you perform first before discharging a CRT?

A

Remove the CRT from its housing

B

Disconnect the CRT from the computer

C

Remove the video assembly

D

Turn power off before removing power source

E

None of the above

In facultative stabilization pond, the sewage is treated by

A

Aerobic bacteria only

B

Algae only

C

Dual action of aerobic bacteria and anaerobic bacteria

D

Sedimentation

A shallow pond in which the sewage is retained and biologically treated is called

A

Oxidation

B

Imhoff tank

C

Lagoon

D

Skimming tank

Before discharging the foul sewage into rivers, it is generally treated by

Related Questions