Measurement of the rate of O2 consumption in unit volume of water over a period of time is done to find out:

Related Mcqs:

1. Measurement of volume is conducted by which method / methods:

   A. Xylometer
   B. The top
   C. The stump
   D. Entire trees
   E. All of the above

2. The ration of volume of pores in the soil to the total soil volume is referred to as:

   A. Pore frequency ratio
   B. Pore density ration
   C. Pore abundance ratio
   D. Pore space ratio

3. Measurement of discharge of water is depicted by:

   A. Q = AV
   B. A = Cross Sectional Area
   C. V = Velocity of Water
   D. All of the above

4. Biological treatment of water pollution is done with the help of:

   A. Lichens
   B. Fungi
   C. Phytoplanktons
   D. None of the above

5. Minimata disease was caused due to the consumption of:

   A. Sea food containing lot of cadmium
   B. Fish contaminated with mercury
   C. Oysters with lot of pesticide
   D. Sea food contaminated with selenium

6. Wood consumption reduction is:

   A. Survey and inventory areas potentially rich in biodiversity and list indigenous flora and fauna
   B. Declare areas with rich biodiversity as genetic preserves in the form of managed wildlife sancturies or national parks
   C. Create career specialities in ecosystem, environment and wildlife management
   D. All of the above

7. If water pollution continues at its present rate, it will eventually:

   A. Make oxygen molecules unavailable to aquatic life
   B. Make nitrates unavailable to aquatic life
   C. Prevent precipitation
   D. Stop the water cycle

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

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

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

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

10. Measurement of age is normally determined by:

    A. From record
    B. From general appearance
    C. From branch whorls
    D. From annual rings
    E. All of the above