Which of the following is not true of coliforms?
A) Finding coliforms in water indicates fecal contamination.
B) They include
C) They are gram-negative, lactose-fermenting, and gas-producing.
D) Coliform counts are not speci?c for a particular species of bacteria.
E) coli, Enterobacter, and Giardia.
Correct Answer:
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Q1: The mass, controlled culture of microbes to
Q2: The first step in sewage treatment is
Q3: A 100 ml sample of water is
Q5: Indicator bacteria for contaminated water are _.
A)
Q6: In the secondary phase of water treatment,
Q7: Which of the following statements regarding waterborne
Q8: Primary sewage treatment includes _.
A) sludge digesting
B)
Q9: Which chemical is used in both water
Q10: Place the steps of the water puri?cation
Q11: The difference between water purification and sewage
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