The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is__________________?

Related Mcqs:

1. Sterilisation control for moist heat is “or” The efficacy of the moist heat sterilization technique commonly used to sterlilize laboratory ware and culture media is tested by using_______________?

   A. using Bacillus stearo thermo philus
   B. Using non-pathogenic strain of clostridium tetani
   C. Using chemical indicator
   D. Using methylene blue

2. Cold sterilization refers to the process of sterilization by use of____________________?

   A. Ultra violet rays
   B. Ultrasonic vibrations
   C. Infrared rays
   D. Gamma rays

3. Cold sterilization refers to the process of sterilization by use of______________?

   A. Ultra violet rays
   B. Ultrasonic vibrations
   C. Infrared rays
   D. Gamma rays

4. The optimal time and temperature required for sterilization in an autoclave is___________________?

   A. 140°C x 2 hrs. x 10 lbs pr.
   B. 121°F x 15 mts. x 15 lbs pr.
   C. 121°F x 15 sec. x 15 lbs pr.
   D. 121°C 15 mts. x 15 lbs pr.

5. compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________?

   A. Time-consuming
   B. Less effective
   C. Causes instruments to rust
   D. Causes sharp instruments to dull

6. Moist heat kills all of the following EXCEPT_______________?

   A. Brucella
   B. Mycobacterium
   C. Salmonella
   D. Coxiella burnetti

7. The Manufacturing unit of surgical needle & sutures are sterilized by ________________?

   A. Gamma-Rays
   B. X-Rays
   C. Autoclaving
   D. Boiling

8. A dentist suffred from Hepatitis B infection 3 months back. His laboratory tests are normal but he is not allowed by the medical board to do surgical practice. He is_____________?

   A. Inactive carrier
   B. Healthy carrier
   C. Convalscent carrier
   D. Paradoxical carrier

9. The best sterilization method for a hand-piece is________________?

   A. Ethylene oxide gas
   B. dry heat
   C. chemical vapour
   D. All of the above

10. The difference between sterilization and disinfection is that_______________?

    A. Disinfection kills all spores but sterilization does not
    B. Sterilization kills all spores but disinfection does not
    C. Sterilization involves chemicals and disinfection involves physical methods
    D. Sterilization is easier to achieve