Discussion
Home ‣ Microbiology ‣ Physical and Chemical Agents Comments
- Question
The time in minutes at a specific temperature needed to kill a population of cells is the
Options- A. decimal reduction time
- B. thermal death point
- C. thermal death temperature
- D. F value
- Correct Answer
- F value
- 1. Microbes can be removed from a liquid solution by the process of
Options- A. filtration
- B. freeze-drying
- C. osmosis
- D. desiccation Discuss
- 2. Which of the following items could be sterilized by dry heat sterilization?
Options- A. Intravenous (IV) solution
- B. Plastic IV bags
- C. Glass pipettes
- D. rubber gloves Discuss
- 3. The time required to kill 90% of the microorganisms in a sample at a specific temperature is the
Options- A. decimal reduction time
- B. thermal death point
- C. F value
- D. D value Discuss
- 4. Which of the following has most heat resistant spores?
Options- A. Clostridium histolyticum
- B. Clostridium perfringens
- C. Bacillus stearothermophilus
- D. Bacillus cereus Discuss
- 5. Preservation of foods by using salts and sugars works by
Options- A. raising pH
- B. lowering osmotic pressure
- C. creating a hypertonic environment
- D. creating a hypotonic environment Discuss
- 6. Milk is pasteurized in batch method by keeping it at
Options- A. 63°C for 30 minutes
- B. 72°C for 60 seconds
- C. 73°C for 30 minutes
- D. 72°C for 6 minutes Discuss
- 7. Which of the following does not kill endospores?
Options- A. Autoclave
- B. Incineration
- C. Hot air sterilization
- D. Pasteurization Discuss
- 8. Iodophores are mixture of
Options- A. iodine and aldehydes
- B. iodine and surface active agents
- C. iodine and alcohols
- D. iodine and phenols Discuss
- 9. All of the following are sporicidal except
Options- A. glutaraldehyde
- B. ethylene oxide
- C. formaldehyde
- D. alcohol Discuss
- 10. Complete destruction of the microorganisms is commonly known as
Options- A. disinfection
- B. sterilization
- C. antisepsis
- D. none of these Discuss
Physical and Chemical Agents problems
Search Results
Correct Answer: filtration
Correct Answer: Glass pipettes
Correct Answer: D value
Correct Answer: Bacillus stearothermophilus
Correct Answer: creating a hypertonic environment
Correct Answer: 63°C for 30 minutes
Correct Answer: Pasteurization
Correct Answer: iodine and surface active agents
Correct Answer: alcohol
Correct Answer: antisepsis
Comments
There are no comments.More in Microbiology:
Programming
Copyright ©CuriousTab. All rights reserved.