1        Name all the common physical agents used for the sterilization process in healthcare facilities such as microbiology laboratories, hospitals, and biotechnology industries

• a.   Dry heat  

• b. Dettol

• c. formalin

• d. Phenols

2.      Autoclave method is the most common and reliable sterilization process used in the microbiology laboratory. Which of the following are the recommended heat temperature and time periods for the moist heat sterilization method used in an autoclave?

• a. 180 ^o c for 5 minutes

• b. 121^o c for 15 minutes

• c. 126^o c for 3 minutes 

• d. 160 ^oc for 45 minutes

Tags

NGSS.MS-PS3-4

3.      What is the correct statement for the term 'Bioburden'?

• a. The number of microorganisms present on the surface

• b. The bacterial spores present on the surface after the sterilization of the surface

• c. The process of elimination of microorganisms by using physical agents

• d. The aseptic process for the maintenance of the sterility of the surface

4.   Which of the following best describes the process of 'Disinfection'?

• a. The elimination of all forms of microorganisms and bacterial spores

•  b. The elimination of all forms of bacterial spores

• c. The reduction or elimination  of microorganisms and bacterial spores

• d. The reduction or elimination of many microorganisms and some bacterial spores

5.   Name the sterilization agent that is most frequently used in hospitals and clinical laboratories for the heat-labile liquid substances or antibiotics

• a. Dry heat

• b. Radiation

• c. Filtration

• d. Formaldehyde 

6.   Which of the following methods has been found safe and effective in the elimination of COVID-19? 

 

• a. Use of 60-70 % isopropyl alcohol

• b. Use of antibacterial ointments

• c. Hand wash with Soap and water

• d. Intake of antibiotics when symptoms appear

7. Which of the following ''water purification'' methods is most common in the rural parts of the countries like India, Nepal, and Africa that is also a simple, reliable, and economical method?

• a. Solar disinfection   

• b. Chlorination

• c. Advanced purifiers

• d. Salt

8. All of the following chemical disinfectants used in laboratories and healthcare industries have been found to be effective against many bacteria, fungi, and viruses, Except?

• a. Alcohol

• b. Ethylene oxide

• c. Formaldehyde

• d. Steam heat

9. Which of the following sterilizing agent is found to have less or no sporicidal activity? 

• a. Hot air oven

• b. Ethyl alcohol

• c. Pasteurization

• d. Autoclave

10. Name the spore containing the pathogen which shows resistance to heat and is usually not destroyed by using heat at 100 degrees Celsius.

• a. E. coli

• b. Candida albicans

• c. Vibrio cholera

• d. Clostridium perfringens