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Question: Answered & Verified by Expert
BOD values (in ppm) for clean water (A) and polluted water (B) are expected respectively as:
ChemistryEnvironmental ChemistryJEE MainJEE Main 2021 (31 Aug Shift 1)
Options:
  • A A<5, B>17
  • B A>50, B<27
  • C A>15, B>47
  • D A>25, B<17
Solution:
2901 Upvotes Verified Answer
The correct answer is: A<5, B>17
Clean water would have BOD a value of less than, 5 ppm whereas highly polluted water could have a BOD value of 17 ppm or more.

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