The predominant immunoglobulin in saliva is:
A. IgA
B. IgD
C. IgE
D. IgG
Steam under pressure in used in ________ sterilization:
A. Pasteurization
B. Autoclave
C. Kochs sterilizer
D. hot air oven
The chemotactic factor is:
A. C2a
B. C3b
C. C4a
D. C5a
Example of immune complex hyper-sensitivity reaction is:
A. Atopic allergy
B. Serum sickness
C. Transfusion reaction
D. Contact dermatitis
The best sterilization method for a hand-piece is:
A. Ethylene oxide gas
B. dry heat
C. chemical vapour
D. All of the above
Dark ground microscopy is useful to identify:
A. Mycoplasma
B. Chlamydiae
C. Rickettsiae
D. Spirochaetes
The Ig found in exocrine secretions is:
A. IgG
B. IgD
C. IgM
D. IgA
Bacterial spores are destroyed by:
A. Boiling at 100°C
B. Disinfection by hypochlorite solution
C. Autoclave
D. Pasteurisation
Which of the following is not a feature of anaphylaxis:
A. Delayed reaction
B. Immediate reaction
C. passive transfer by serum
D. None of the above
Rideal Walker test is used to determine the efficiency of the:
A. Disinfectant
B. Moist heat sterilisation
C. Antibiotics
D. Dry heat sterilization
