Assertion : The amount of BOD in the water is a measure of the amount of organic material in the water . Reason : Clear water has BOD less than 5 ppm whereas highly polluted water can have BOD value of 17 ppm or more .
Study the graph given below and choose the option that is correctly describing the relationship between dissolved oxygen (DO) and biochemical oxygen demand (BOD) : (a) DO prop 3BOD (b) DO prop 2BOD (c) DO prop 1/(BOD) (d) DO prop BOD
The BOD of an eutrophic lake will be:
High BOD indicates
BOD (biological oxygen demand) is
The greater BOD of waste water
B.O.D. is connected with
Assertion: BOD indicates the extent of water pollution by organic wastes. Reason: Increase in BOD decreases dissolved oxygen of wastewater.
