Which of the following would be the fastest way to kill endospores?
A. Autoclave at 121°C
B. Tincture of soap
C. Hot air oven at 180°C
D. Chlorox solution
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In gas chromatography, the basis for separation of the components of the volatile material is the difference in
A. Partition coefficients
B. Conductivity
C. Molecular weight
D. Molarity
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The ionizing radiation, which affects the activities of most of the enzymes is due to
A. Photoemission of electron
B. Interaction of α - particles, β - and γ - rays with enzymes
C. Interaction of electron with body
D. Interaction of radiation with tissue
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For identifying the distribution of a specific protein in a tissue, which one of the following types of immunofluorescence microscopic methods has attained the highest level of resolution?
A. Indirect immunofluorescence microscopy
B. Confocal microscopy
C. Confocal microscopy with de-convolution
D. Wide angle microscopy with de-convolution
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Lyophilisation is a process of
A. Freeze drying
B. Irradiation
C. Heat drying
D. Chemical treatment
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How is fluoride removed from drinking water?
A. Reverse osmosis
B. Distillation
C. Freezing water
D. Boiling water
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Which of the following techniques is most appropriate for determining crystalline structure of environmental samples?
A. Infrared spectroscopy
B. X - ray diffraction
C. Microspectrophotometry
D. Raman spectroscopy
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Which of the following physical treatments cause damage to bacterial cells by producing free radicals?
A. Ultraviolet light
B. Gamma ray irradiation
C. Microwave irradiation
D. Heat
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An autoclave normally sterilizes material by heating the material to . . . . . . . . for . . . . . . . . minute at . . . . . . . . psi
A. 100, 10, 30
B. 121.5, 15, 15
C. 110, 30, 5
D. 120, 30, 10
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In colloidal chemical substance, the light undergoes
A. Diffraction
B. Polarization
C. Scattering
D. Total internal reflection
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