Discussion
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- Question
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
- Correct Answer
- Photovoltaic production of hydrogen
- 1. Iron bacteria can produce
Options- A. slime
- B. undesirable odors and tastes
- C. both (a) and (b)
- D. extreme acidity Discuss
- 2. 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
- 3. 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
- 4. 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
- 5. Composting is one of the oldest forms of disposal of waste. It is the natural process of decomposition of organic waste that yields manure or compost. One of the following is added to the compost to get better results?
Options- A. Ants
- B. Bugs
- C. Snakes
- D. Worms Discuss
- 6. 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 Discuss
- 7. 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
- 8. 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
- 9. 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
- 10. Most spoilage bacteria grow at
Options- A. acidic pH
- B. alkaline pH
- C. neutral pH
- D. any of the pH Discuss
Microbiology of Waste Water problems
Search Results
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: Worms
Correct Answer: a biofilm
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
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