JEE Main 12 Jan 2019 Morning Question 6
Question: Water samples with BOD values of 4 ppm and 18 ppm, respectively, are [JEE Main Online Paper Held On 12-Jan-2019 Morning]
Options:
A) clean and highly polluted
B) highly polluted and highly polluted
C) highly polluted and clean
D) clean and clean.
Show Answer
Answer:
Correct Answer: A
Solution:
- Clean water has a BOD value less than 5 ppm whereas highly polluted water has BOD value of 17 ppm or more.
