A. Hot air oven
B. U.V. rays
C. Gamma rays
D. Boiling
Related Mcqs:
- Sunlight acts as sterilizing agent because_________________?
A. Long wavelength
B. short wave lenght
C. Ozone
D. Heat - The best sterilization method for a hand-piece is________________?
A. Ethylene oxide gas
B. dry heat
C. chemical vapour
D. All of the above - The best method of sterilization of dressing powder is_____________?
A. Autoclaving
B. Hot air oven
C. Inspissation
D. Tyndallization - The commonest method of detection of diptheria carriers is_______________?
A. Schick test
B. Dick test
C. Casoni’s test
D. Charles’ test - Silver impregnation method of staining is useful to demonstrate_____________?
A. Bacterial flagella
B. Spirochetes
C. Both of the above
D. None of the above - Cough plate method is used to identify________________?
A. Y. pestis
B. Pertussis
C. Mycoplasma
D. M-Tuberculosis - In method of firing: A shorter firing period at a higher temperature is considered better_______________?
A. A large time period at a lower temperature is preferred
B. A long firing period at a very high temperature is preferred
C. A short firing period at a very low temperature is preferred
D. none of these - Chemical method of strengthening porcelain involves_________________?
A. Exchange of aluminium and sodium ions
B. Exchange of aluminium and potassium ions
C. Exchange of sodium and potassium ions
D. None of the above - The most reliable criteria in Gustafson’s method of identification is______________?
A. Cementum apposition
B. Transparency of root
C. Attrition
D. Root resorption - Which of the following is a non-destructive method of age estimation in adults ?
A. Assessment of root dentin translucency
B. Amino acid racemisation
C. Evaluation of tooth cementum annulations
D. Pulp to tooth ratio of canines
