Water filled in two glasses A and B have BOD values

Question:

Water filled in two glasses A and B have BOD values of 10 and 20 , respectively. The correct statement regarding them, is :

  1. $\mathrm{A}$ is more polluted than $\mathrm{B}$

  2. A is suitable for drinking, whereas B is not

  3. $\mathrm{B}$ is more polluted than $\mathrm{A}$

  4. Both A and B are suitable for drinking


Correct Option: , 3

Solution:

Two glasses "A" and "B" have BOD values 10 and "20", respectively.

Hence glasses "B" is more polluted than glasses "A".

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