Escherichia coli is used as an indicator organism to determine pollution of water with:

Related Mcqs:

1. The high amount of E. coli in water in the indicator of:

   A. Hardness of water
   B. Industrial pollution
   C. Sewage pollution
   D. Presence of chlorine in water

2. Common indicator organism of water pollution is:

   A. Eichhornia crassipes
   B. Escherichia coli
   C. Entamoeba histolytica
   D. Lemna pancicostata

3. The Escherichia cells in a human excreta number in:

   A. Thousands
   B. Hundreds
   C. Billion
   D. Millions

4. The transfer of energy from organism to organism is a natural community establishes:

   A. Food chains
   B. Biological control
   C. Natural barriers
   D. All the above

5. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

6. Which one of the following organisms is used as indicator of water quality?

   A. Beggiota
   B. Chlorella
   C. Azospirillium
   D. Escherichia

7. Water pollution:

   A. Increases oxygenation
   B. Decreases turbidity
   C. Increases turbidity deoxygenation
   D. Increases photosynthesis

8. Most harmful heavy metals causing water pollution:

   A. Pb, Hg, Cr, Cd
   B. P,Mn,B,Mg
   C. N,K,Mo
   D. Zn,Mo,Mg,Ag

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

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

10. The ground water pollution is due to excess of:

    A. DDT is a growth retardant
    B. Pesticides
    C. Minerals
    D. Carbon deposit