UPSC Exam > UPSC Questions > Consider the following statements: 1. Water ...
Start Learning for Free
Consider the following statements:
1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).
2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.
3. It is expressed in milligrams of oxygen per litre of water.
Which of these statements is/are correct?
- a)1 and 2 only
- b)2 and 3 only
- c)1 and 3 only
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements: 1. Water pollution by organic wast...
Water Pollution and Biochemical Oxygen Demand (BOD)
Introduction:
Water pollution is a significant environmental issue that poses a threat to the health and well-being of humans and ecosystems. Organic wastes, such as sewage, agricultural runoff, and industrial effluents, can contribute to water pollution. Biochemical Oxygen Demand (BOD) is a crucial parameter used to measure the extent of water pollution caused by organic wastes.
Statement 1: Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).
This statement is correct. Biochemical Oxygen Demand (BOD) is a widely used parameter for measuring the level of organic pollution in water bodies. BOD helps to determine the amount of oxygen required by microorganisms to break down the organic matter present in the water.
Statement 2: BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.
This statement is correct. BOD quantifies the amount of oxygen consumed by bacteria and other microorganisms as they decompose the organic matter in the water. Bacteria require oxygen to carry out biological processes involved in breaking down the organic wastes, and BOD helps to estimate this oxygen demand.
Statement 3: It is expressed in milligrams of oxygen per liter of water.
This statement is correct. BOD is typically expressed in milligrams of oxygen required per liter of water (mg/L). It represents the amount of oxygen needed by microorganisms to oxidize the organic compounds present in the water.
Conclusion:
All three statements are correct. Water pollution caused by organic wastes is measured using Biochemical Oxygen Demand (BOD), which represents the amount of dissolved oxygen required by bacteria and other microorganisms to decompose the organic matter in the water. BOD is expressed in milligrams of oxygen per liter of water, providing a quantitative measure of water pollution. Monitoring BOD levels is essential for assessing the impact of organic pollution and implementing effective pollution control measures.
Introduction:
Water pollution is a significant environmental issue that poses a threat to the health and well-being of humans and ecosystems. Organic wastes, such as sewage, agricultural runoff, and industrial effluents, can contribute to water pollution. Biochemical Oxygen Demand (BOD) is a crucial parameter used to measure the extent of water pollution caused by organic wastes.
Statement 1: Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).
This statement is correct. Biochemical Oxygen Demand (BOD) is a widely used parameter for measuring the level of organic pollution in water bodies. BOD helps to determine the amount of oxygen required by microorganisms to break down the organic matter present in the water.
Statement 2: BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.
This statement is correct. BOD quantifies the amount of oxygen consumed by bacteria and other microorganisms as they decompose the organic matter in the water. Bacteria require oxygen to carry out biological processes involved in breaking down the organic wastes, and BOD helps to estimate this oxygen demand.
Statement 3: It is expressed in milligrams of oxygen per liter of water.
This statement is correct. BOD is typically expressed in milligrams of oxygen required per liter of water (mg/L). It represents the amount of oxygen needed by microorganisms to oxidize the organic compounds present in the water.
Conclusion:
All three statements are correct. Water pollution caused by organic wastes is measured using Biochemical Oxygen Demand (BOD), which represents the amount of dissolved oxygen required by bacteria and other microorganisms to decompose the organic matter in the water. BOD is expressed in milligrams of oxygen per liter of water, providing a quantitative measure of water pollution. Monitoring BOD levels is essential for assessing the impact of organic pollution and implementing effective pollution control measures.
Free Test
FREE
| Start Free Test |
Community Answer
Consider the following statements: 1. Water pollution by organic wast...
- DO, BOD, COD Presence of organic and inorganic wastes in water decreases the dissolved oxygen (DO) content of the water.
- Water having DO content below 8.0 mg L-1 may be considered as contaminated. Water having DO content below. 4.0 mg L-1 is considered to be highly polluted. DO content of water is important for the survival of aquatic organisms.
|
Explore Courses for UPSC exam
|
|
Similar UPSC Doubts
Top Courses for UPSCView all
Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer?
Question Description
Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. 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 Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer?.
Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. 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 Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. 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 Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements: 1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.3. It is expressed in milligrams of oxygen per litre of water.Which of these statements is/are correct?a) 1 and 2 onlyb) 2 and 3 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. 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!
within 7 days!
Takes less than 10 seconds to signup