UPSC Exam > UPSC Questions > Biological Oxygen Demand (BOD) is a standard...
Start Learning for Free
Biological Oxygen Demand (BOD) is a standard criterion for
- a)Measuring oxygen levels in the blood
- b)Computing oxygen levels in forest ecosystems
- c)Pollution assay in aquatic ecosystems
- d)Assessing oxygen levels in high altitude regions
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring...
Biological Oxygen Demand (BOD) is a standard criterion for pollution assay in aquatic ecosystems. The BOD of a water sample is the amount of oxygen consumed by microorganisms when the sample is incubated at a specific temperature for a specific period. The test measures the amount of oxygen required by aerobic microorganisms to decompose the organic matter present in the water sample.
Importance of BOD
BOD is an important parameter for assessing the pollution level of water bodies. It provides information on the amount of organic matter, such as sewage and industrial waste, that is present in the water. High BOD levels indicate high levels of pollution and low dissolved oxygen levels in aquatic ecosystems. This can lead to the death of fish and other aquatic organisms, and can also make the water unsuitable for human use.
Measurement of BOD
The BOD test is conducted in a laboratory by taking a water sample and incubating it for five days at a temperature of 20°C. During this time, the sample is kept in the dark to prevent photosynthesis from occurring. The amount of oxygen consumed by the microorganisms is then measured using a dissolved oxygen meter. The results are expressed in milligrams of oxygen per liter of water (mg/L).
Conclusion
In conclusion, Biological Oxygen Demand (BOD) is a standard criterion for pollution assay in aquatic ecosystems. It is an important parameter for assessing the pollution level of water bodies and provides information on the amount of organic matter present in the water. The BOD test is conducted in a laboratory by incubating a water sample for five days at a specific temperature and measuring the amount of oxygen consumed by microorganisms during this time.
Importance of BOD
BOD is an important parameter for assessing the pollution level of water bodies. It provides information on the amount of organic matter, such as sewage and industrial waste, that is present in the water. High BOD levels indicate high levels of pollution and low dissolved oxygen levels in aquatic ecosystems. This can lead to the death of fish and other aquatic organisms, and can also make the water unsuitable for human use.
Measurement of BOD
The BOD test is conducted in a laboratory by taking a water sample and incubating it for five days at a temperature of 20°C. During this time, the sample is kept in the dark to prevent photosynthesis from occurring. The amount of oxygen consumed by the microorganisms is then measured using a dissolved oxygen meter. The results are expressed in milligrams of oxygen per liter of water (mg/L).
Conclusion
In conclusion, Biological Oxygen Demand (BOD) is a standard criterion for pollution assay in aquatic ecosystems. It is an important parameter for assessing the pollution level of water bodies and provides information on the amount of organic matter present in the water. The BOD test is conducted in a laboratory by incubating a water sample for five days at a specific temperature and measuring the amount of oxygen consumed by microorganisms during this time.
Free Test
FREE
| Start Free Test |
Community Answer
Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring...
The Correct Answer is Option 3, i.e., Pollution assay in aquatic ecosystems.
Biological Oxygen Demand (BOD):
- It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at a certain temperature over a specific time period to break down organic material present in that water.
- BOD is often used in wastewater-treatment plants and is used as an index of the degree of organic pollution in water.
|
Explore Courses for UPSC exam
|
|
Top Courses for UPSCView all
Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer?
Question Description
Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer?.
Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Biological Oxygen Demand (BOD) is a standard criterion fora)Measuring oxygen levels in the bloodb)Computing oxygen levels in forest ecosystemsc)Pollution assay in aquatic ecosystemsd)Assessing oxygen levels in high altitude regionsCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup