A. 20% phenol
B. High efficiency particle arrestors
C. 40% formaldehyde vapour
D. Chlorine gas
Related Mcqs:
- 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 - Endoscopes are sterilized by using_______________?
A. Autoclaving
B. Boiling
C. Cidex
D. Gamma radiation - Candidal hyphae can be stained using_______________?
A. Van Gieson’s stain
B. Periodic acid schiff stain
C. Masson Trichrome stain
D. Toluidine blue stain - Disinfection frees the surface from______________?
A. Vegetative forms
B. Spore forms
C. Both of the above
D. None of the above - 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 - The impression with the least dimensional change upon disinfection is_______________?
A. Addition poly silicone
B. Agar-agar
C. Polysulphide
D. Polyether - A child presents with infective skin lesions of the leg. Culture was done which showed gram positive cocci in chains and haemolytic colonies. Which of the following tests will best identify the organism ?
A. Bile solubility
B. Optochin sensitivity
C. Bacitracin sensitivity
D. Cataslase positive - Sterilization of liquid paraffin is done by______________?
A. Autoclaving
B. Hot air oven
C. UV-Radiation
D. Inspissation - Flash pasteurization of milk is done at what temperature______________?
A. 125°C for new seconds
B. 60°C for 15 minutes
C. 72°C for 5 minutes
D. 72° for 15 – 20 Sec - Serological study for prevalence of Hepatitis B is best done by______________?
A. Surface antigen
B. Surface antibody
C. Core antigen
D. Core antibody