BOD is connected with:

Related Mcqs:

1. Biological Oxygen Demand (BOD) is a measure of:

   A. Industrial wastes poured into water bodies
   B. Extent to which water is polluted with organic compounds
   C. Amount of carbon monoxide inseparably combined with haemoglobin
   D. Amount of oxygen needed by green plants during night

2. BOD is the amount of oxygen:

   A. Present in water
   B. Utilized by organisms in water
   C. Utilized by micro-organisms for decomposition
   D. Demanded by the producers for the production of food

3. In a river, if its BOD is high, then:

   A. River is polluted
   B. River is not polluted
   C. River is day
   D. None of these

4. BOD stands for:

   A. Biotic oxygen deduction
   B. Base of degradation
   C. Biotic oxide demand
   D. Biological oxygen demand

5. BOD value of sewage water than that of tap water is:

   A. More
   B. Less
   C. Equal
   D. Somewhere more somewhere less

6. As compared to tap water the BOD of sewage polluted water shall be:

   A. High
   B. Low
   C. Same
   D. None of these

7. With the increase in water pollution, the BOD:

   A. Decreases
   B. Increases
   C. Remains the same
   D. Is no measure of pollution

8. When excess of sewage is dumped in the river, its BOD:

   A. Increases
   B. Slightly decreases
   C. Remains unchanged
   D. Decreases drastically

9. BOD of polluted water is increased by

   A. Algae
   B. Moss
   C. Ferns
   D. Distillated wastes

10. Which of the following enhances BOD of water?

    A. Algae
    B. Sand
    C. Moss
    D. Sugar mill effluents