The enrichment of water by nutrients is:

Related Mcqs:

1. A lake with nutrients is called:

   A. Trophic
   B. Eutrophic
   C. Oligotrophic
   D. Euphotic

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

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

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

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

4. When a big fish eats a small fish, which easts water-fleas supported by phytoplankton, the water leas are:

   A. Primary consumers
   B. Producers
   C. Secondary consumers
   D. Top consumers in this food chain

5. The soils that are fully laden with water i.e., water logged, are known are:

   A. Physically dry soils
   B. Physiologically dry soils
   C. Alkaline soils
   D. Acidic soils

6. When a soil has been thoroughly wetted and then allowed to drain until capillary movement of the water has stopped, the water content of the soil will give an estimate of it’s:

   A. Gravitational water
   B. Capillary water
   C. Field capacity
   D. Storage capacity

7. Water-logging is a serious problems, with water-table within _____ over the greater part of the area:

   A. 5m
   B. 6m
   C. 7m
   D. 8m

8. The importance of watershed management was realized when Pakistan signed Indus Water Treaty with India through which right of water of ______ was given to India while Pakistan has the right on river Indus and Jhelum:

   A. Chenab
   B. Ravi
   C. Sutlij
   D. All of the above

9. The sea water gets pollution mainly due to:

   A. Industrial waste
   B. Oil spills
   C. Death of marine fauna
   D. None of these

10. BOD of polluted water is increased by

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