Discussion
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- Question
A dense bacterial population caught in a tangled web of fibers sticking to a surface describes
Options- A. coagulation
- B. a biodisc
- C. a biofilm
- D. the membrane filter technique
- Correct Answer
- a biofilm
- 1. Which is not a form of biomass energy?
Options- A. Incineration of solid waste
- B. Composting to produce methane
- C. Ethanol and methanol production for auto fuel
- D. Photovoltaic production of hydrogen Discuss
- 2. Iron bacteria can produce
Options- A. slime
- B. undesirable odors and tastes
- C. both (a) and (b)
- D. extreme acidity Discuss
- 3. Treatment of municipal water supplies is based upon
Options- A. coagulation, filtration, chlorination
- B. chlorination, filtration, coagulation
- C. filtration, coagulation, chlorination
- D. coagulation, chlorination, filtration Discuss
- 4. Biogas production is
Options- A. a temperature-dependent process
- B. a temperature independent process
- C. an oxygen dependent process
- D. none of the above Discuss
- 5. Which of the following statement is not correct?
Options- A. The use of 25-40°C temperatures allows the biogas production to be more stable
- B. The use of 25-40°C temperatures does not destroy potentially harmful bacteria
- C. The use of 25-40°C temperatures destroys potentially harmful bacteria
- D. None of the above Discuss
- 6. Suspected colonies of Staphylococcus aureus when grown on Baird-Parker medium shall show
Options- A. coagulase activity
- B. protease activity
- C. catalase activity
- D. none of these Discuss
- 7. Which of the following is not true for the thermal resistance of the bacterial cells?
Options- A. Cocci are usually more resistant than rods
- B. Higher the optimal and maximal temperatures for growth, higher the resistance
- C. Bacteria that clump considerably or form capsules are difficult to kill
- D. Cells low in lipid content are harder to kill than other cells Discuss
- 8. Which of the following acid will have higher bacteriostatic effect at a given pH?
Options- A. Acetic acid
- B. Tartaric acid
- C. Citric acid
- D. Maleic acid Discuss
- 9. Most spoilage bacteria grow at
Options- A. acidic pH
- B. alkaline pH
- C. neutral pH
- D. any of the pH Discuss
- 10. The microbiological examination of coliform bacteria in foods preferably use
Options- A. MacConkey broth
- B. violet Red Bile agar
- C. eosine Methylene blue agar
- D. all of these Discuss
Microbiology of Waste Water problems
Search Results
Correct Answer: Photovoltaic production of hydrogen
Correct Answer: both (a) and (b)
Correct Answer: coagulation, filtration, chlorination
Correct Answer: a temperature-dependent process
Correct Answer: The use of 25-40°C temperatures destroys potentially harmful bacteria
Correct Answer: coagulase activity
Correct Answer: Cells low in lipid content are harder to kill than other cells
Correct Answer: Acetic acid
Correct Answer: neutral pH
Correct Answer: all of these
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