Medical MCQs

5099 MCQs  (Page 186 of 510)

Which of the following is not a koch’s postulate ?
A. The bacteria should be able to be isolated from a diseased tissue
B. When inoculated in experimental animals bacteria may or may not cause disease
C. Pure cultures can be obtained
D. Bacteria should be able to be isolated from the diseased tissue in the experimental animals
Disinfection of the rooms can be done by using_______________?
A. 20% phenol
B. High efficiency particle arrestors
C. 40% formaldehyde vapour
D. Chlorine gas
Who first introduced solid media_______________?
A. Louis pasteur
B. Robert koch
C. Hensen
D. Ogston
Sterilization of liquid paraffin is done by______________?
A. Autoclaving
B. Hot air oven
C. Uv-radiation
D. Inspissation
Glutaraldehyde is preferred more than formaldehyde because______________?
A. It has got more bactericidal activity
B. It has got more bacteriostatic activity
C. It has got no deleterious effect on the cement and lenses of instruments
D. Its application is easier
Tyndallisation is carried out for________________?
A. One day
B. Two successive days
C. 60 minutes
D. Three successive days