Given below are two statements :-

Question:

Given below are two statements :-

Statement I : The value of the parameter "Biochemical Oxygen Demand (BOD)" is important for survival of aquatic life.

Statement II : The optimum value of BOD is $6.5 \mathrm{ppm}$.

In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Statement I is false but Statement II is true

  2. Both Statement I and Statement II are true

  3. Statement I is true but Statement II is false

  4. Both Statement I and Statement II are false

Correct Option: 3,

Solution:

Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of $17 \mathrm{ppm}$ or more.

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