MCQ ON STERILIZATION AND DISINFECTION | MCQ ON STERILIZATION WITH ANSWERS

 

MICROBIOLOGY MCQ 

MULTIPLE CHOICE QUESTIONS ON STERILIZATION AND DISINFECTION PDF

MCQ ON STERILIZATION

mcq on sterilization techniques

mcq on sterilization microbiology

1) The process of killing microorganisms including spores is

  A) Disinfection  
B) sanitization
C) sterilization
D) filtration

... Answer is C)
sterilization "

2) Sanitization is mostly used in

A) Hospitals
B) Research laboratories
C) Food processing and catering units
D) All of the above

... Answer is D)
All of the above .

3) The flash and holder method are used in the process of

A) Immunization
B) Disinfection
C) Pasteurizations
D) Both a and b

... Answer is C)
Pasteurizations

4) Best Autoclaving is achieved at

A) 121°c for 15 minutes
B) 120°c for 1 hours
C) 110°c for 2 hours
D) 100°c for 3 hours

... Answer is A)
121°c for 15 minutes "

5) Burning to ashes is referred to as

A) Inertizations
B) Sanitization
C) Incineration
D) Disinfection

... Answer is C)
Incineration .

6) Sterilization by ionizing radiation is also known as

A) Cold sterilization
B) Thermosterilizations
C) Electrosterilzations
D) None of the above

... Answer is A)
Cold sterilization .

9) Which of the following are chemical indicators of sterilization

A) Browne's tube
B) Witness tube
C) Royce sachet
D) All of the above

... Answer is D)
All of the above

8) sintered glass filter includes

A) Fritted glass filter
B) Morton filters
C) Both A and B
D) Berkefield filter

... Answer is C)
Both A and B .

9) Paraffin oil can be sterilized by

A) Hot air oven
B) Autoclaving
C) Filtration
D) Disinfection

... Answer is A)
Hot air oven .

10) The most suitable pore size for bacterial filtration in a membrane filter is…..

A) 0.22mm
B) 0.45nm
C) 0.22um
D) 0.22um

... Answer is C)
0.22um "

11) Red heat is used for sterilization of….

A) Glass slide
B) Glass syringe
C) Surgical dressings
D) Nichrome wireloop

... Answer is D)
Nichrome wireloop

12) Exposure of materials to steam of 1000C for 20 minutes on three consecutive days is known as……

A) Pasteurization
B) Tyndalization
C) Antisepsis
D) Sanitisation

... Answer is B)
Tyndalization

13) In the holder method milk is sterilized by pasteurization at…….

A) 63 degree centigrade for 30 minutes
B) 72 degree centigrade for 30 minutes
C) 65 degree centigrade for 20 minutes
D) 92 degree centigrade for 20 minutes

... Answer is A)
63 degree centigrade for 30 minutes

14) Best method of sterilizing disposable syringes is…..

A) Hot air oven
B) UV rays
C) Gamma rays
D) Boiling in water

... Answer is C)
Gamma rays

15) Talc powder is generally sterilized by…..

A) Autoclave
B) Hot air oven
C) Radiations
D) Filtration

... Answer is B)
Hot air oven

16) Hot air oven is an example of

A) Moist heat
B) Dry heat
C) Radiation
D) None of the above

... Answer is B)
Dry heat