Toxoids are_________________?
(A) antigenic and toxic
(B) antigenic and non-toxic
(C) non-antigenic and toxic
(D) non-antigenic and non-toxic
Adjuvant given along with antigens are going to________________?
(A) Increase toxigenicity
(B) Increase antigenicity
(C) Reduce the antigenicity
(D) reduce the toxigenicity
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
Best method of sterilizing disposable syringes_______________?
(A) Hot air oven
(B) U.V. rays
(C) Gamma rays
(D) Boiling
A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called_____________?
(A) Type I hypersensitivity
(B) Type II hypersensitivity
(C) Type III hypersensitivity
(D) Type IV hypersensitivity
Tyndallisation is carried out for________________?
(A) One day
(B) Two successive days
(C) 60 minutes
(D) Three successive days
Sunlight acts as sterilizing agent because_________________?
(A) Long wavelength
(B) short wave lenght
(C) Ozone
(D) Heat