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With reference to the Dissolved oxygen (DO), consider the following statements:
1. It is the amount of oxygen that is present in water.
2. Running water, such as that of a swift moving stream, dissolves very less oxygen than the still water of a pond or lake.
Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
With reference to the Dissolved oxygen (DO), consider the following st...
The water quality of the Ganga was clean enough for bathing and capable of supporting the river ecosystem for almost the entire stretch of the river, Ministry of Jal Shakti informed the Rajya Sabha.
  • Dissolved oxygen (DO), which is an indicator of river health was within “acceptable limits” of “bathing water quality criteria”.
  • A report by the Central Pollution Control Board (CPCB) in 2018, pointed out four polluted stretches on the main stem of river Ganga. There are five categories ranked 1 to 5, with 1 the most polluted and 5 the least.
  • An updated 2021 report noted that none of the stretches of the Ganga were now in Priority Category I to IV and only two stretches are in Priority Category V with bio-chemical oxygen demand (BOD), a parameter different from DO, ranging between 3-6 microgram/litre as per CPCB categorisation of polluted stretch.
  • The NRCP has so far covered polluted stretches on 34 rivers in 77 towns spread over 16 States with a sanctioned cost of ₹5,961.75 crore. The Namami Gange programme has funded 364 projects, including 160 for sewage treatment.
What is dissolved oxygen?
  • Dissolved oxygen (DO) is the amount of oxygen that is present in water.
  • Water bodies receive oxygen from the atmosphere and from aquatic plants.
  • Running water, such as that of a swift moving stream, dissolves more oxygen than the still water of a pond or lake.
Hence only statement 1 is correct.
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With reference to the Dissolved oxygen (DO), consider the following statements:1. It is the amount of oxygen that is present in water.2. Running water, such as that of a swift moving stream, dissolves very less oxygen than the still water of a pond or lake.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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With reference to the Dissolved oxygen (DO), consider the following statements:1. It is the amount of oxygen that is present in water.2. Running water, such as that of a swift moving stream, dissolves very less oxygen than the still water of a pond or lake.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to the Dissolved oxygen (DO), consider the following statements:1. It is the amount of oxygen that is present in water.2. Running water, such as that of a swift moving stream, dissolves very less oxygen than the still water of a pond or lake.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to the Dissolved oxygen (DO), consider the following statements:1. It is the amount of oxygen that is present in water.2. Running water, such as that of a swift moving stream, dissolves very less oxygen than the still water of a pond or lake.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?.
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