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Questions and Answers
Which method is based on the interaction of laser light with particles?
Which method is based on the interaction of laser light with particles?
- Hydrometer method
- Pipette method
- X-ray diffraction method
- Laser light scattering method (correct)
Which method is suitable to determine the distribution of particles of respirable size?
Which method is suitable to determine the distribution of particles of respirable size?
- Turbidimetric method
- Pressure method
- X-ray diffraction method
- Rotating drum method (correct)
What is the principle behind the X-ray diffraction method?
What is the principle behind the X-ray diffraction method?
- Specific diffraction pattern from a crystal of material (correct)
- Light blockage principle
- Particles deposited on an impaction plate
- Laser light interaction with particles
Which method is very sensitive and used in the identification of polymorphs?
Which method is very sensitive and used in the identification of polymorphs?
Which method can be used to obtain the size distribution of an aerosol?
Which method can be used to obtain the size distribution of an aerosol?
Which method is based on the light blockage principle?
Which method is based on the light blockage principle?
In elutriation, what happens to the fluid and the particles?
In elutriation, what happens to the fluid and the particles?
What is the main advantage of the Coulter-Current method?
What is the main advantage of the Coulter-Current method?
How is the surface method used to determine the mean particle size of a powder?
How is the surface method used to determine the mean particle size of a powder?
What is the key feature of the fluid classification method for size analysis of powder?
What is the key feature of the fluid classification method for size analysis of powder?
What happens when a particle travels across the orifice in the Coulter-Current method?
What happens when a particle travels across the orifice in the Coulter-Current method?
What does elutriation involve?
What does elutriation involve?
What is the purpose of using an immersed electrode on either side of the aperture in electronic scanning zone (coulter counter)?
What is the purpose of using an immersed electrode on either side of the aperture in electronic scanning zone (coulter counter)?
What type of suspension flows through a suitable aperture in electronic scanning zone (coulter counter)?
What type of suspension flows through a suitable aperture in electronic scanning zone (coulter counter)?
What is the effect of a particle traveling across the orifice in Coulter-Current method?
What is the effect of a particle traveling across the orifice in Coulter-Current method?
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