The presence of high coliform counts in water indicates
A. contamination by human wastes
B. phosphorus contamination
C. decreased Biological Oxygen Demand
D. hydrocrbon contamination
Answer: Option A
Solution (By Examveda Team)
The presence of high coliform counts in water indicate contamination by human wastes. Coliform bacteria or Escherichia coli is a bacteria that is present in human intestine. It is a useful bacteria. When people discharge fecal matter near water bodies these microorganisms enter water.This Question Belongs to General Knowledge >> Environmental Science
What is the cause of the Exxon Valdez?
A. Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected.
B. a plane which crashed and caused death of human life
C. a ship which wrecked on the coast of India
D. none of these.
A. A much higher temperature than -10o C
B. A much lower temperature than -10o C
C. A temperature of -10o C
D. A temperature of -30o C
Infrared and visible satellite images might provide:
A. A way of determining cloud thickness and altitude.
B. A way of distinguishing between wet and dry clouds.
C. A way of identifying clouds suitable for cloud seeding.
D. A way of distinguishing between "new" and "old" clouds.
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