Question 1

_________ is accomplished by the replenishment of oxygen lost to bacterial degradation of organic waste.

Accepted Answer

A) Gas transfer 
B) Dilution 
C) Filtration 
D) Re-suspension 
A) Gas transfer 
B) Dilution 
C) Filtration 
D) Re-suspension A

Question 2

The upper region of the trickling filter is favorable for the growth of _____________

Accepted Answer

A) fungi 
B) protozoa 
C) algae 
D) bacteria 
A) fungi 
B) protozoa 
C) algae 
D) bacteria C

Question 3

Control of river pollution can be done by providing the extra ___________ during dry season.

Accepted Answer

A) Water 
B) Nitrogen 
C) Carbondioxide 
D) Oxygen 
A) Water 
B) Nitrogen 
C) Carbondioxide 
D) Oxygen D

Question 4

The impact of pollution depends upon nature of the pollutants and the ___________

Accepted Answer

A) Toxic contaminants 
B) Season 
C) Contaminants 
D) Characteristics of river 
A) Toxic contaminants 
B) Season 
C) Contaminants 
D) Characteristics of river

Question 5

Which one of the following is the basic indicator of river health?

Accepted Answer

A) BOD 
B) COD 
C) DO 
D) ThOD 
A) BOD 
B) COD 
C) DO 
D) ThOD

Question 6

What is the expected BOD removal after both primary and secondary treatment?

Accepted Answer

A) 90% 
B) 85% 
C) 80% 
D) 75% 
A) 90% 
B) 85% 
C) 80% 
D) 75%

Question 7

which of the following does not include in the monitoring of river pollution?

Accepted Answer

A) Assessing the immediate water quality 
B) Development activities in the region 
C) Determination of flow increase 
D) Colour of the water 
A) Assessing the immediate water quality 
B) Development activities in the region 
C) Determination of flow increase 
D) Colour of the water

Question 8

Which of these is not an advantage of a trickling filter?

Accepted Answer

A) Temperature 
B) Construction cost 
C) Oxygen delivery 
D) Electric systems 
A) Temperature 
B) Construction cost 
C) Oxygen delivery 
D) Electric systems

Question 9

In a flowing stream, the breakdown of degradable wastes by bacteria ________ dissolved oxygen.

Accepted Answer

A) Increases 
B) Depletes 
C) Maintains 
D) Improves 
A) Increases 
B) Depletes 
C) Maintains 
D) Improves

Question 10

What is the wastewater called as after physical and biological removal of solids?

Accepted Answer

A) Primary effluent 
B) Primary treated water 
C) Secondary treated water 
D) Secondary treated wastewater 
A) Primary effluent 
B) Primary treated water 
C) Secondary treated water 
D) Secondary treated wastewater

Question 11

In the concept of self purification of natural streams, complete the following phrase. Solution to pollution is _________

Accepted Answer

A) Control 
B) Dilution 
C) Reuse 
D) Recycle 
A) Control 
B) Dilution 
C) Reuse 
D) Recycle

Question 12

In which of the following treatment involve oxidation of organic constituents of the wastewater?

Accepted Answer

A) Primary treatment 
B) Secondary treatment 
C) Advanced treatment 
D) Final treatment 
A) Primary treatment 
B) Secondary treatment 
C) Advanced treatment 
D) Final treatment

Question 13

What is the objective of water quality management?

Accepted Answer

A) Control the discharge of pollutants 
B) Pollutants are discharged into flowing streams 
C) Selective pollutants are released 
D) Only highly toxic pollutants are released 
A) Control the discharge of pollutants 
B) Pollutants are discharged into flowing streams 
C) Selective pollutants are released 
D) Only highly toxic pollutants are released

Question 14

What is the minimum amount of DO required for the life survival of aquatic animals?

Accepted Answer

A) 10 mg/l 
B) 5 mg/l 
C) 2 mg/l 
D) 1 mg/l 
A) 10 mg/l 
B) 5 mg/l 
C) 2 mg/l 
D) 1 mg/l

Question 15

Activated sludge usually employs an aeration period of ________________

Accepted Answer

A) 1 hour 
B) 24 hours 
C) 10-15 hours 
D) 4-8 hours 
A) 1 hour 
B) 24 hours 
C) 10-15 hours 
D) 4-8 hours

Question 16

Belt filter presses are used in which of the following process?

Accepted Answer

A) Thickening 
B) Stabilization 
C) Dewatering 
D) Disposal 
A) Thickening 
B) Stabilization 
C) Dewatering 
D) Disposal

Question 17

Trickling filter is used in which of the following wastewater treatment processes?

Accepted Answer

A) Primary treatment 
B) Secondary treatment 
C) Advanced treatment 
D) Final treatment 
A) Primary treatment 
B) Secondary treatment 
C) Advanced treatment 
D) Final treatment

Question 18

Biological process is used to remove _______

Accepted Answer

A) Settleable solids 
B) Volatile solids 
C) Dissolved solids 
D) Colloids 
A) Settleable solids 
B) Volatile solids 
C) Dissolved solids 
D) Colloids

Question 19

What is the percentage removal of BOD by stabilization ponds?

Accepted Answer

A) 20% 
B) 45% 
C) 65% 
D) 95% 
A) 20% 
B) 45% 
C) 65% 
D) 95%

Question 20

Which of the following is a strict anaerobe?

Accepted Answer

A) Enterobacter 
B) Alcaligenes 
C) Pseudomonas 
D) Methanosarcina 
A) Enterobacter 
B) Alcaligenes 
C) Pseudomonas 
D) Methanosarcina

_________ is accomplished by the replenishment of oxygen lost to bacterial degradation of organic waste.

The upper region of the trickling filter is favorable for the growth of _____________

Control of river pollution can be done by providing the extra ___________ during dry season.

The impact of pollution depends upon nature of the pollutants and the ___________

Which one of the following is the basic indicator of river health?

What is the expected BOD removal after both primary and secondary treatment?

which of the following does not include in the monitoring of river pollution?

Which of these is not an advantage of a trickling filter?

In a flowing stream, the breakdown of degradable wastes by bacteria ________ dissolved oxygen.

What is the wastewater called as after physical and biological removal of solids?

In the concept of self purification of natural streams, complete the following phrase. Solution to pollution is _________

In which of the following treatment involve oxidation of organic constituents of the wastewater?

What is the objective of water quality management?

What is the minimum amount of DO required for the life survival of aquatic animals?

Activated sludge usually employs an aeration period of ________________

Belt filter presses are used in which of the following process?

Trickling filter is used in which of the following wastewater treatment processes?

Biological process is used to remove _______

What is the percentage removal of BOD by stabilization ponds?

Which of the following is a strict anaerobe?

Understanding Water Pollution and Its Effects on Aquatic Life

Water Pollution and Regulations

Water Treatment and Softening Processes

Water Treatment and Pollution Control

Compounds, Fluoridation, and Oxidation Resistance

Grit Chambers and Activated Sludge Processes

Demineralized Water, Ion-Exchange, and Ozonation Processes

Sewage Sludge and Treatment Processes

Filters

Exam 3: Pollutants From Wastewater: A Study on River Pollution Control and Wastewater Treatment

_________ is accomplished by the replenishment of oxygen lost to bacterial degradation of organic waste.

The upper region of the trickling filter is favorable for the growth of _____________

Control of river pollution can be done by providing the extra ___________ during dry season.

The impact of pollution depends upon nature of the pollutants and the ___________

Which one of the following is the basic indicator of river health?

What is the expected BOD removal after both primary and secondary treatment?

which of the following does not include in the monitoring of river pollution?

Which of these is not an advantage of a trickling filter?

In a flowing stream, the breakdown of degradable wastes by bacteria ________ dissolved oxygen.

What is the wastewater called as after physical and biological removal of solids?

In the concept of self purification of natural streams, complete the following phrase. Solution to pollution is _________

In which of the following treatment involve oxidation of organic constituents of the wastewater?

What is the objective of water quality management?

What is the minimum amount of DO required for the life survival of aquatic animals?

Activated sludge usually employs an aeration period of ________________

Belt filter presses are used in which of the following process?

Trickling filter is used in which of the following wastewater treatment processes?

Biological process is used to remove _______

What is the percentage removal of BOD by stabilization ponds?

Which of the following is a strict anaerobe?

Understanding Water Pollution and Its Effects on Aquatic Life

Water Pollution and Regulations

Water Treatment and Softening Processes

Water Treatment and Pollution Control

Compounds, Fluoridation, and Oxidation Resistance

Grit Chambers and Activated Sludge Processes

Demineralized Water, Ion-Exchange, and Ozonation Processes

Sewage Sludge and Treatment Processes

Filters