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.  Both Statement I and Statement II are false

  2.  Statement $\mathrm{I}$ is false but Statement II is true

  3. Statement I is true but Statement II is false

  4. Both Statement I and Statement II are true

Correct Option: , 3

Solution:

For survival of aquatic life dissolved oxygen is responsible its optimum limit $6.5 \mathrm{ppm}$ and optimum limit of $\mathrm{BOD}$ ranges from $10-20 \mathrm{ppm} \& \mathrm{BOD}$ stands for biochemical oxvgen demand.

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