Multiple Choice
Why is secondary treatment often needed for sewage?
A) The dissolved organics are too high and lead to bacterial growth.
B) The solution is contaminated with dangerous bacteria.
C) There are too many dissolved inorganic compounds.
D) There are too many finely divided particles that need to be filtered.
E) none of the above
Correct Answer:
Verified
Correct Answer:
Verified
Q57: Why do hot water heaters lose their
Q58: Does the concentration of chlorine in drinking
Q59: Would you expect to find more dissolved
Q60: Red blood cells have a high concentration
Q61: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6597/.jpg" alt=" -Which of the
Q63: How would you classify the following material?
Q64: Which of the following might best describe
Q65: Why is it significantly less costly to
Q66: How is the solubility of a solid
Q67: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6597/.jpg" alt=" -Which