Water sample cleanest basis|Electrochemistry |JEE-MAIN-2021

JEE MAIN 2021

1-9-21 S2

Question

Water sample is called cleanest on the basis of which one of the BOD values given below

Select the correct option:

11 ppm

15 ppm

3 ppm

21 ppm

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Clean water could have BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of 17 ppm or more.

Question Tags

JEE Main

Physics

Easy

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