In sewage treatment, its sedimentation is speeded up by commonly adding

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

A

Filtration

B

Digestion

C

Sedimentation

D

Both B and C

The function of sedimentation tank in sewage treatment is to:

A

Disinfect the sewage

B

Remove water content

C

Aerate the sewage

D

Remove suspended solids

A Double-ended queue supports operations such as adding and removing items from both the sides of the queue. They support four operations like addFront(adding item to top of the queue), addRear(adding item to the bottom of the queue), removeFront(removing item from the top of the queue) and removeRear(removing item from the bottom of the queue). You are given only stacks to implement this data structure. You can implement only push and pop operations. What are the total number of stacks required for this operation?(you can reuse the stack)

A

1

B

2

C

3

D

4

A double-ended queue supports operations like adding and removing items from both the sides of the queue. They support four operations like addFront(adding item to top of the queue), addRear(adding item to the bottom of the queue), removeFront(removing item from the top of the queue) and removeRear(removing item from the bottom of the queue). You are given only stacks to implement this data structure. You can implement only push and pop operations. What’s the time complexity of performing addFront and addRear? (Assume ‘m’ to be the size of the stack and ‘n’ to be the number of elements)

A

O(m) and O(n)

B

O(1) and O(n)

C

O(n) and O(1)

D

O(n) and O(m)

The most commonly used substance to speed up the sedimentation of sewage is

A

Lime

B

Sulphuric acid

C

Chlorine

D

Sodium bisulphite

The chemical most commonly used to increase speed of sedimentation of sewage is

A

Sulphuric acid

B

Copper sulphate

C

Lime

D

Sodium permanganate

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

The cooling effect in a cooling tower can be speeded up by

A

Increasing the air velocity and area of exposed wet surface

B

Reducing the barometric pressure

C

Reducing the humidity of the air

D

All of the above

Approximately how much times the boltzman learning get speeded up using mean field approximation?

A

5-10

B

10-30

C

30-50

D

50-70

In sewage treatment, its sedimentation is speeded up by commonly adding

Related Questions