wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Clean water would have BOD value of less than ?


A

10ppm

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

20ppm

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

5ppm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

12ppm

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

5ppm


Explanation for the correct option:

Option (C): 5ppm.

  • The term BOD is known as the Biochemical Oxygen Demand.
  • It is defined as the amount of dissolved oxygen that the aerobic bacteria require to decompose the organic waste present in the water sample.
  • Drinking water is known to have a BOD level of 1-2ppm.
  • When the BOD value of water is in the range 3-5ppm, the water is said to be moderately clean, hence this suggests that for clean water, the BOD value should be less than 5ppm.
  • Whereas Polluted water has a BOD value in the range of 6-9ppm.and the value of BOD more than 100 ppm suggests, the water to be highly polluted.

Hence, the clean water should have a BOD value less than 5ppm.


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Microbes in Waste Management
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon