Multiple Choice
What is biological oxygen demand (BOD) ?
A) A measure of the amount of dissolved oxygen microorganisms use up as they decompose organic wastes found in water
B) A measure of the amount of dissolved oxygen necessary to purify wastewater
C) A measure of the phosphate ion concentration of water
D) A measure of nitrate ion concentration of water
Correct Answer:
Verified
Correct Answer:
Verified
Q10: Which concentration is consistent with a basic
Q11: A 0.25 M solution of the sugar
Q12: What are the major disadvantages of using
Q13: Every increase of one pH unit indicates<br>A)an
Q14: Which is not a consequence of hydrogen
Q16: Which of the following is not carried
Q17: The acid neutralizing capacity of a lake
Q18: Which form of water disinfection continues to
Q19: Which reaction accounts for the fact
Q20: Which reaction most accurately represents the