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BOD is the measure of organic material present in water. BOD value less than 5 ppm indicates the water sample to be:
  • a)
    polluted.
  • b)
    rich in dissolved oxygen.
  • c)
    clean.
  • d)
    Both b and c
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
BOD is the measure of organic material present in water. BOD value l...
The amount of BOD in water is an account of the quantity of organic material in water, in units of how much oxygen will be required to break it down biologically.
High BOD means more organic compounds. Hence, more oxygen is required by the bacteria for degradation. Therefore, lower will be the amount of dissolved oxygen.
Low BOD means lesser organic compounds. Hence, for clean water, lesser oxygen is required by the bacteria for degradation. Therefore, higher will be the amount of dissolved oxygen.
Clean water has a BOD value of less than 5 ppm, whereas, highly polluted water has a BOD value of 17 ppm or more.
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BOD is the measure of organic material present in water. BOD value less than 5 ppm indicates the water sample to be:a)polluted.b)rich in dissolved oxygen.c)clean.d)Both b and cCorrect answer is option 'D'. Can you explain this answer?
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