What amount of BOD indicates low water pollution?

Measuring 'Biochemical Oxygen Demand' (BOD) is a method used for  </h2></div>

Which gas is released by improper or incomplete combustion and are generally emitted from vehicles?<br> </h2&gt…

If BOD of river is high, it means that the river </h2></div>

<span>Which of the following prevents afforestation in deserts?</span><br> </h2></div>

Groundwater will not be depleted due to</h2></div>

........... is continuously formed by the action of UV rays on molecular oxygen and also degraded into molecular oxygen …

When domestic sewage mixes with river water </h2></div>