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- Question
Which of the following is not a disinfectant containing a heavy metal?
Options- A. Silver nitrate
- B. Mercurochrome
- C. Copper sulfate
- D. Chlorine
- Correct Answer
- Chlorine
- 1. The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the
Options- A. decimal reduction time
- B. thermal death point
- C. thermal death temperature
- D. thermal death time Discuss
- 2. Which of the following describes the effect of ionizing radiation on microbes?
Options- A. Changes the 3-dimensional structure of proteins to a 2-dimen-sional form
- B. Substantially decreases enzymatic activity, slowing microbial reproduction
- C. Induces electrons and protons to jump out of the molecules of the microbe
- D. None of the above Discuss
- 3. A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.
Options- A. bacteriostatic agent
- B. sanitizer
- C. disinfectant
- D. antiseptic Discuss
- 4. If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound?
Options- A. 1
- B. 5
- C. 10
- D. 50 Discuss
- 5. Which of the following was the first widely used antiseptic and disinfectant?
Options- A. Chlorine
- B. Phenol
- C. Iodine
- D. Alcohol Discuss
- 6. Which of the following tests is designed to simulate the natural conditions under which the disinfectants are used in hospitals?
Options- A. Phenol coefficient test
- B. Minimum inhibitory concentration test
- C. Capacity test
- D. None of these Discuss
- 7. The process of making an object free from living organisms including bacterial and fungal spores and viruses is known as
Options- A. pasteurization
- B. antisepsis
- C. disinfection
- D. sterilization Discuss
- 8. The organisms retained in the fluids filtered by Seitz filter is
Options- A. Proteus
- B. Staphylococcus
- C. Clostridium
- D. None of these Discuss
- 9. Which of the following is a limitation of the autoclave?
Options- A. It takes too long to sterilize
- B. It lacks the ability to inactivate viruses
- C. It lacks the ability to kill endospores
- D. It will destroy heat labile materials Discuss
- 10. One drawback to the use of ultraviolet light as a sterilizing agent is its
Options- A. failure to kill bacteria
- B. failure to bacterial spores
- C. failure to kill microbes in a closed environment
- D. failure to kill microbes located in the center of an object Discuss
Physical and Chemical Agents problems
Search Results
Correct Answer: thermal death point
Correct Answer: Induces electrons and protons to jump out of the molecules of the microbe
Correct Answer: antiseptic
Correct Answer: 10
Correct Answer: Phenol
Correct Answer: Capacity test
Correct Answer: sterilization
Correct Answer: None of these
Correct Answer: It will destroy heat labile materials
Correct Answer: failure to kill microbes located in the center of an object
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