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All questions of Wastewater Management for Class 7 Exam
What are the benefits of using alternative methods of sewage disposal?- a)Reduced water usage
- b)Reduced environmental impact
- c)Improved public health
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
What are the benefits of using alternative methods of sewage disposal?
a)
Reduced water usage
b)
Reduced environmental impact
c)
Improved public health
d)
All of the above
|
Priyanka Kapoor answered |
Alternative methods of sewage disposal can result in reduced water usage, reduced environmental impact, and improved public health.
What are alternative methods of sewage disposal?- a)Composting toilets
- b)Wetlands treatment systems
- c)Greywater reuse systems
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
What are alternative methods of sewage disposal?
a)
Composting toilets
b)
Wetlands treatment systems
c)
Greywater reuse systems
d)
All of the above
|
|
Priyanka Kapoor answered |
Alternative methods of sewage disposal include composting toilets, wetlands treatment systems, and greywater reuse systems.
Which of the following is not a stage of wastewater treatment?- a)Primary treatment
- b)Secondary treatment
- c)Tertiary treatment
- d)Quaternary treatment
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not a stage of wastewater treatment?
a)
Primary treatment
b)
Secondary treatment
c)
Tertiary treatment
d)
Quaternary treatment
|
Kiran Reddy answered |
Quaternary treatment is not a stage of wastewater treatment.
What is the difference between primary and secondary treatment?- a)Primary treatment removes large objects and debris, while secondary treatment breaks down organic matter
- b)Primary treatment breaks down organic matter, while secondary treatment removes contaminants
- c)Primary treatment removes contaminants, while secondary treatment disinfects the wastewater
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
What is the difference between primary and secondary treatment?
a)
Primary treatment removes large objects and debris, while secondary treatment breaks down organic matter
b)
Primary treatment breaks down organic matter, while secondary treatment removes contaminants
c)
Primary treatment removes contaminants, while secondary treatment disinfects the wastewater
d)
None of the above
|
|
Kiran Reddy answered |
Primary treatment is the first stage of wastewater treatment, in which large objects and debris are removed from the wastewater. Secondary treatment is the second stage of wastewater treatment, in which microorganisms are used to break down organic matter in the wastewater.
What is primary treatment?- a)The removal of large objects and debris from wastewater
- b)The use of chemicals to remove contaminants from wastewater
- c)The biological breakdown of organic matter in wastewater
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
What is primary treatment?
a)
The removal of large objects and debris from wastewater
b)
The use of chemicals to remove contaminants from wastewater
c)
The biological breakdown of organic matter in wastewater
d)
None of the above
|
|
Priyanka Kapoor answered |
Primary treatment is the first stage of wastewater treatment, in which large objects and debris are removed from the wastewater.
What are the contaminants present in wastewater?- a)Chemicals
- b)Fecal matter
- c)Bacteria
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
What are the contaminants present in wastewater?
a)
Chemicals
b)
Fecal matter
c)
Bacteria
d)
All of the above
|
|
Priyanka Kapoor answered |
Wastewater can contain a variety of contaminants, including chemicals, fecal matter, bacteria, viruses, and other pathogens.
What is the Green Corner?- a)A section of the wastewater treatment plant for composting organic waste
- b)An area in the community for promoting environmental awareness
- c)A system for treating wastewater using green technologies
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
What is the Green Corner?
a)
A section of the wastewater treatment plant for composting organic waste
b)
An area in the community for promoting environmental awareness
c)
A system for treating wastewater using green technologies
d)
None of the above
|
|
Priyanka Kapoor answered |
The Green Corner is an area in the community for promoting environmental awareness and encouraging sustainable practices.
What is the sewer system?- a)A network of pipes that collects and transports wastewater to a treatment plant
- b)A system for disposing of hazardous waste
- c)A method for treating wastewater
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
What is the sewer system?
a)
A network of pipes that collects and transports wastewater to a treatment plant
b)
A system for disposing of hazardous waste
c)
A method for treating wastewater
d)
None of the above
|
|
Priyanka Kapoor answered |
The sewer system is a network of pipes, pumps, and other infrastructure that collects and transports wastewater from homes, businesses, and other sources to a treatment plant.
What is the role of microorganisms in wastewater treatment?- a)To break down organic matter
- b)To remove contaminants
- c)To generate electricity
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
What is the role of microorganisms in wastewater treatment?
a)
To break down organic matter
b)
To remove contaminants
c)
To generate electricity
d)
None of the above
|
|
Priyanka Kapoor answered |
Microorganisms are used in secondary treatment to break down organic matter in wastewater.
What is the purpose of a wastewater treatment plant?- a)To remove contaminants from wastewater
- b)To promote environmental awareness
- c)To generate electricity
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
What is the purpose of a wastewater treatment plant?
a)
To remove contaminants from wastewater
b)
To promote environmental awareness
c)
To generate electricity
d)
None of the above
|
|
Priyanka Kapoor answered |
The purpose of a wastewater treatment plant is to remove contaminants from wastewater and make it safe to discharge back into the environment.
What are the consequences of improper sewage management?- a)Contamination of water sources
- b)Spread of diseases
- c)Environmental degradation
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
What are the consequences of improper sewage management?
a)
Contamination of water sources
b)
Spread of diseases
c)
Environmental degradation
d)
All of the above
|
|
Kiran Reddy answered |
Improper sewage management can lead to contamination of water sources, spread of diseases, and environmental degradation.
What is the role of filtration in wastewater treatment?- a)To remove large objects and debris
- b)To remove contaminants
- c)To remove pathogens
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
What is the role of filtration in wastewater treatment?
a)
To remove large objects and debris
b)
To remove contaminants
c)
To remove pathogens
d)
None of the above
|
|
Kiran Reddy answered |
Filtration is used in tertiary treatment to remove remaining contaminants from the wastewater.
What is tertiary treatment?- a)The removal of large objects and debris from wastewater
- b)The use of chemicals to remove contaminants from wastewater
- c)The biological breakdown of organic matter in wastewater
- d)The removal of remaining contaminants from wastewater using additional treatment methods
Correct answer is option 'D'. Can you explain this answer?
What is tertiary treatment?
a)
The removal of large objects and debris from wastewater
b)
The use of chemicals to remove contaminants from wastewater
c)
The biological breakdown of organic matter in wastewater
d)
The removal of remaining contaminants from wastewater using additional treatment methods
|
|
Kiran Reddy answered |
Tertiary treatment is the final stage of wastewater treatment, in which remaining contaminants are removed from the wastewater using additional treatment methods such as chemical treatment, filtration, and disinfection.
What is eutrophication?- a)The process of treating wastewater
- b)The buildup of nutrients in a body of water, leading to excessive plant growth and oxygen depletion
- c)The removal of contaminants from wastewater
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
What is eutrophication?
a)
The process of treating wastewater
b)
The buildup of nutrients in a body of water, leading to excessive plant growth and oxygen depletion
c)
The removal of contaminants from wastewater
d)
None of the above
|
|
Priyanka Kapoor answered |
Eutrophication is a natural process that occurs when excessive nutrients, such as nitrogen and phosphorus, are introduced into a body of water, leading to an overgrowth of algae and other aquatic plants. This can deplete the oxygen in the water and harm fish and other aquatic life.
What is secondary treatment?- a)The removal of large objects and debris from wastewater
- b)The use of chemicals to remove contaminants from wastewater
- c)The biological breakdown of organic matter in wastewater
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
What is secondary treatment?
a)
The removal of large objects and debris from wastewater
b)
The use of chemicals to remove contaminants from wastewater
c)
The biological breakdown of organic matter in wastewater
d)
None of the above
|
|
Kiran Reddy answered |
Secondary treatment is the second stage of wastewater treatment, in which microorganisms are used to break down organic matter in the wastewater.
How can sewage generation be controlled?- a)By reducing water usage
- b)By using water-efficient appliances
- c)By repairing leaks
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
How can sewage generation be controlled?
a)
By reducing water usage
b)
By using water-efficient appliances
c)
By repairing leaks
d)
All of the above
|
|
Kiran Reddy answered |
Sewage generation can be controlled by reducing water usage, using water-efficient appliances, and repairing leaks to prevent water wastage.
What is the purpose of the Green Corner in promoting environmental awareness?- a)To encourage sustainable practices
- b)To generate electricity
- c)To treat wastewater using green technologies
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
What is the purpose of the Green Corner in promoting environmental awareness?
a)
To encourage sustainable practices
b)
To generate electricity
c)
To treat wastewater using green technologies
d)
None of the above
|
|
Kiran Reddy answered |
The Green Corner is an area in the community for promoting environmental awareness and encouraging sustainable practices.
Which of the following is a source of wastewater?- a)Rainwater
- b)Drinking water
- c)Water from swimming pool
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Which of the following is a source of wastewater?
a)
Rainwater
b)
Drinking water
c)
Water from swimming pool
d)
None of the above
|
|
Kiran Reddy answered |
Wastewater is any water that is no longer needed or suitable for its original purpose and is discharged from homes, businesses, industries, or other sources.
What is the purpose of disinfection in wastewater treatment?- a)To break down organic matter
- b)To remove contaminants
- c)To kill pathogens
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
What is the purpose of disinfection in wastewater treatment?
a)
To break down organic matter
b)
To remove contaminants
c)
To kill pathogens
d)
None of the above
|
|
Priyanka Kapoor answered |
Disinfection is the process of killing pathogens in wastewater to make it safe for discharge back into the environment.
Why is sanitation important in public places?- a)To prevent the spread of diseases
- b)To reduce water usage
- c)To promote environmental awareness
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
Why is sanitation important in public places?
a)
To prevent the spread of diseases
b)
To reduce water usage
c)
To promote environmental awareness
d)
None of the above
|
|
Priyanka Kapoor answered |
Sanitation is important in public places to prevent the spread of diseases and maintain public health.
Chapter doubts & questions for Wastewater Management - Class 7 Oxford Science: Chapter Notes, Worksheets & Tests 2025 is part of Class 7 exam preparation. The chapters have been prepared according to the Class 7 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 7 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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