Question 1

In which year was the structure of ozone determined?

Accepted Answer

A) 1865 
B) 1875 
C) 1885 
D) 1895 
A) 1865 
B) 1875 
C) 1885 
D) 1895 A

Question 2

The residual hardness in ion-exchange process is ____________

Accepted Answer

A) 0-2 ppm 
B) 5-10 ppm 
C) 10-15 ppm 
D) 20-30 ppm 
A) 0-2 ppm 
B) 5-10 ppm 
C) 10-15 ppm 
D) 20-30 ppm A

Question 3

Ozone is formed by the interaction of _______

Accepted Answer

A) UV or O2 
B) O and O2 
C) O and UV 
D) O2 and CO 
A) UV or O2 
B) O and O2 
C) O and UV 
D) O2 and CO A

Question 4

In ion-exchange process, the capital cost is _________ and the operational expenses are ______________

Accepted Answer

A) Low, high 
B) High, low 
C) High, high 
D) Low, low 
A) Low, high 
B) High, low 
C) High, high 
D) Low, low

Question 5

_______ is produced by subjecting oxygen to high electric voltage.

Accepted Answer

A) Carbon-monoxide 
B) Carbon-dioxide 
C) Pure oxygen 
D) Ozone 
A) Carbon-monoxide 
B) Carbon-dioxide 
C) Pure oxygen 
D) Ozone

Question 6

Which of these is not an advantage of Ozonation?

Accepted Answer

A) Reaction with bacteria 
B) Organics degradation 
C) Equipment costs 
D) Chemicals 
A) Reaction with bacteria 
B) Organics degradation 
C) Equipment costs 
D) Chemicals

Question 7

How is the electrical requirement for the ozonation process expressed mathematically?

Accepted Answer

A) EE/O =EEt/ Vlog(Ci-Cf) 
B) EE/O =EEt/ (Ci-Cf) 
C) EE/O =EEt Vlog(Ci-Cf) 
D) EE/O =EEt(Ci-Cf) 
A) EE/O =EEt/ Vlog(Ci-Cf) 
B) EE/O =EEt/ (Ci-Cf) 
C) EE/O =EEt Vlog(Ci-Cf) 
D) EE/O =EEt(Ci-Cf)

Question 8

At what pH ozonation is carried out?

Accepted Answer

A) 8 
B) 9 
C) 11 
D) 7 
A) 8 
B) 9 
C) 11 
D) 7

Question 9

Which of the following methods are used in rural communities?

Accepted Answer

A) Aerobic digestion 
B) Mechanical dewatering 
C) Dewatering 
D) Composting 
A) Aerobic digestion 
B) Mechanical dewatering 
C) Dewatering 
D) Composting

Question 10

What is the maximum time required for ozone degradation?

Accepted Answer

A) 15 minutes 
B) 30 minutes 
C) 45 minutes 
D) 60 minutes 
A) 15 minutes 
B) 30 minutes 
C) 45 minutes 
D) 60 minutes

Question 11

The exhausted cation exchange column is regenerated by passing a solution of ____________

Accepted Answer

A) Dil. HCl 
B) Dil. NaCl 
C) Conc. HCl 
D) Conc. NaCl 
A) Dil. HCl 
B) Dil. NaCl 
C) Conc. HCl 
D) Conc. NaCl

Question 12

Primary sludge includes __________

Accepted Answer

A) Total suspended solids 
B) Suspended solids 
C) Removable solids 
D) Settleable solids 
A) Total suspended solids 
B) Suspended solids 
C) Removable solids 
D) Settleable solids

Question 13

In which year was the ozone named?

Accepted Answer

A) 1829 
B) 1839 
C) 1849 
D) 1859 
A) 1829 
B) 1839 
C) 1849 
D) 1859

Question 14

Which of the following can be inactivated using ozone?

Accepted Answer

A) Algae 
B) Fungi 
C) Protozoa 
D) All microbes 
A) Algae 
B) Fungi 
C) Protozoa 
D) All microbes

Question 15

The exhausted anion exchange column is regenerated by passing a solution of ____________

Accepted Answer

A) Dil. KOH 
B) Conc. KOH 
C) Conc. NaOH 
D) Dil. NaOH 
A) Dil. KOH 
B) Conc. KOH 
C) Conc. NaOH 
D) Dil. NaOH

Question 16

Which of the following statement is incorrect about the demineralised water?

Accepted Answer

A) It is as pure as distilled water 
B) It is very good for use in high pressure boilers 
C) It is fit for domestic use 
D) It can be made either by distillation or by using cation and anion exchangers 
A) It is as pure as distilled water 
B) It is very good for use in high pressure boilers 
C) It is fit for domestic use 
D) It can be made either by distillation or by using cation and anion exchangers

Question 17

Which of the following is not correct regarding Ozonation?

Accepted Answer

A) Does not requires chemicals 
B) Eliminates bad taste 
C) Eliminates odour 
D) Operational costs are low 
A) Does not requires chemicals 
B) Eliminates bad taste 
C) Eliminates odour 
D) Operational costs are low

Question 18

In what range is the EE/O present in order to reduce one log of reduction?

Accepted Answer

A) 0-20 KWH 
B) 20-265 KWH 
C) 265-365 KWH 
D) 365-650 KWH 
A) 0-20 KWH 
B) 20-265 KWH 
C) 265-365 KWH 
D) 365-650 KWH

Question 19

What is the average ozone concentration created during Ozonation?

Accepted Answer

A) 1000 mg/l 
B) 5000 mg/l 
C) 10000 mg/l 
D) 15000 mg/l 
A) 1000 mg/l 
B) 5000 mg/l 
C) 10000 mg/l 
D) 15000 mg/l

Question 20

Photo catalysis uses which of the following methods to produce free radicals?

Accepted Answer

A) UV rays 
B) UV + TiO2 
C) Ozone + UV 
D) TiO2 
A) UV rays 
B) UV + TiO2 
C) Ozone + UV 
D) TiO2

In which year was the structure of ozone determined?

The residual hardness in ion-exchange process is ____________

Ozone is formed by the interaction of _______

In ion-exchange process, the capital cost is _ and the operational expenses are ______

_______ is produced by subjecting oxygen to high electric voltage.

Which of these is not an advantage of Ozonation?

How is the electrical requirement for the ozonation process expressed mathematically?

At what pH ozonation is carried out?

Which of the following methods are used in rural communities?

What is the maximum time required for ozone degradation?

The exhausted cation exchange column is regenerated by passing a solution of ____________

Primary sludge includes __________

In which year was the ozone named?

Which of the following can be inactivated using ozone?

The exhausted anion exchange column is regenerated by passing a solution of ____________

Which of the following statement is incorrect about the demineralised water?

Which of the following is not correct regarding Ozonation?

In what range is the EE/O present in order to reduce one log of reduction?

What is the average ozone concentration created during Ozonation?

Photo catalysis uses which of the following methods to produce free radicals?

Understanding Water Pollution and Its Effects on Aquatic Life

Water Pollution and Regulations

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

Water Treatment and Softening Processes

Water Treatment and Pollution Control

Compounds, Fluoridation, and Oxidation Resistance

Grit Chambers and Activated Sludge Processes

Sewage Sludge and Treatment Processes

Filters

Exam 8: Demineralized Water, Ion-Exchange, and Ozonation Processes

In which year was the structure of ozone determined?

The residual hardness in ion-exchange process is ____________

Ozone is formed by the interaction of _______

In ion-exchange process, the capital cost is _________ and the operational expenses are ______________

_______ is produced by subjecting oxygen to high electric voltage.

Which of these is not an advantage of Ozonation?

How is the electrical requirement for the ozonation process expressed mathematically?

At what pH ozonation is carried out?

Which of the following methods are used in rural communities?

What is the maximum time required for ozone degradation?

The exhausted cation exchange column is regenerated by passing a solution of ____________

Primary sludge includes __________

In which year was the ozone named?

Which of the following can be inactivated using ozone?

The exhausted anion exchange column is regenerated by passing a solution of ____________

Which of the following statement is incorrect about the demineralised water?

Which of the following is not correct regarding Ozonation?

In what range is the EE/O present in order to reduce one log of reduction?

What is the average ozone concentration created during Ozonation?

Photo catalysis uses which of the following methods to produce free radicals?

Understanding Water Pollution and Its Effects on Aquatic Life

Water Pollution and Regulations

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

Water Treatment and Softening Processes

Water Treatment and Pollution Control

Compounds, Fluoridation, and Oxidation Resistance

Grit Chambers and Activated Sludge Processes

Sewage Sludge and Treatment Processes

Filters

In ion-exchange process, the capital cost is _ and the operational expenses are ______