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Question: Answered & Verified by Expert
The water having more dissolved O2 is :
ChemistryEnvironmental ChemistryJEE MainJEE Main 2021 (22 Jul Shift 1)
Options:
  • A boiling water
  • B water at 80°C
  • C polluted water
  • D water at 4°C
Solution:
2679 Upvotes Verified Answer
The correct answer is: water at 4°C
On heating concentration of O2 in water decreases. So boiling water and water at 80°C having less O2 concentration. Polluted water also having less O2 concentration. So water at 4°C is having maximum O2 concentration.

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