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NTA Abhyas JEE Main2020ChemistryEnvironmental ChemistryPractice

Which of two water sample A & B with BOD of 10 and 20 respectively, then mark correct option

Options

  1. AA is more polluted
  2. BB is more polluted
  3. CA and B both are equally polluted
  4. DA and B both are equally suitable for drinking.

Correct answer

B. B is more polluted

Step-by-step solution

B O D for a clean water should be less than 5 ; where as highly polluted water could have a BOD value of 17 ppm or more. So, B is more polluted and not suitable for drinking

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